道路標識ドイツ

A priority road is a road on which drivers normally have priority over traffic entering from intersecting side roads.

It is normally indicated by a priority-road sign at or near its beginning. A corresponding end sign indicates where its continuing priority status stops.

Normally, yes, while the priority-road designation remains in force. Drivers must still observe traffic lights, authorised officers and any signs applying at a particular intersection.

Not necessarily. A priority road commonly continues across successive intersections until an end sign or another legally defined change in priority.

Side roads are commonly controlled by give-way or stop signs, but sign placement and legal requirements differ between countries.

Where the priority-road signs apply, drivers entering from intersecting side roads must normally give way regardless of whether they approach from the left or right.

No. A priority-road sign normally creates continuing priority across several intersections. Another sign may grant priority only at the next intersection.

No. The priority route may turn at an intersection. A supplementary diagram may show which branch retains priority.

Priority does not remove the duty to signal. Use the direction indicators whenever following or leaving the priority route involves a change of direction or lateral movement.

No. Approach every intersection at a safe speed and remain prepared for another road user to fail to give way.

No. The applicable general, zonal or posted speed limit remains in force.

Functioning traffic lights normally control the intersection instead of the priority signs. Local rules determine what applies when the lights are switched off or flashing.

Yes. Instructions from an authorised traffic officer normally take precedence over traffic signs and ordinary priority rules.

Yes, where the applicable crossing rules give them priority. Priority over side-road traffic does not remove duties towards pedestrians.

You must still give way to oncoming traffic, pedestrians, cyclists and other road users where the normal turning rules require it.

Cyclists using the road or a continuing bike path may have priority over entering or turning traffic, depending on signs, markings and local law.

Not automatically. Roundabout priority is determined by its own signs, signals and local rules.

Priority-road status does not itself permit or prohibit overtaking. Drivers must follow the ordinary overtaking rules, markings and visibility requirements.

This depends on local law and signs. Some countries prohibit parking on priority roads outside built-up areas, while other parking rules may apply inside towns and cities.

No. A driver entering the road from a property, parking place or other off-road location normally performs a manoeuvre and must give way to road users already present.

No. Do not enter when congestion would force you to stop inside the intersection and obstruct crossing traffic.

Its continuing priority normally ends at an end-of-priority-road sign. Drivers must then follow the signs or ordinary priority rule applying at the next intersection.

A road narrowing is a section where the usable width of the road becomes smaller. Traffic may have less space to pass, merge or travel beside other road users.

It may be indicated by a triangular warning sign showing the road edges moving closer together. The symbol may show narrowing on both sides, the left side or the right side.

A road may narrow because of a bridge, tunnel, barrier, traffic-calming measure, roadworks, parked vehicles, landslide, damaged road edge or reduction in the number of lanes.

No. It normally warns of danger rather than setting a numerical speed limit. Drivers must still reduce speed when necessary to pass safely.

Not by itself. Priority may be established by separate signs, signals or local rules. Without them, drivers should approach cautiously and cooperate.

In many countries, the driver whose side is obstructed must give way to approaching traffic. The precise rule depends on local law and any priority signs displayed.

Neither direction necessarily has automatic priority. Drivers should reduce speed, assess who can pass safely and avoid entering when doing so would block approaching traffic.

One sign may require you to give way to oncoming traffic, while the corresponding sign may indicate that you have priority. Drivers must still avoid entering when the passage is already occupied or blocked.

No. Priority is not an obligation to proceed. Slow down or stop when another vehicle is already in the narrow section or when continuing would create danger.

Allow it enough room to leave the narrow section. Do not enter if the available width is insufficient for both vehicles to pass safely.

Check mirrors, reduce speed smoothly and observe oncoming traffic, cyclists, pedestrians and vehicles beside you. Be prepared to stop or merge.

Use an indicator when you must change lanes or move laterally. Merely following a lane that bends with the road may not require a signal under local law.

Check the adjacent lane, signal and merge safely according to the local merging rules. Do not force another driver to brake or leave the road.

Zipper merging means that vehicles from an ending or blocked lane merge alternately with vehicles in the continuing lane, usually immediately before the narrowing during congestion.

Where zipper merging applies, continue using both lanes and merge alternately near the narrowing. In free-flowing traffic, change lanes safely when a suitable gap is available.

A narrowing sign does not always prohibit overtaking, but overtaking should be avoided when there is insufficient width, visibility or distance to complete the manoeuvre safely.

Wait behind the cyclist when the required passing distance cannot be maintained. Do not squeeze past or force the cyclist towards a kerb, barrier or damaged road edge.

Large vehicles may need additional width and may cross lane or centre markings where legally permitted. Other drivers should leave sufficient space and avoid passing alongside them in the narrowing.

Yes. Pavements or verges may also become narrow or blocked. Drivers should expect pedestrians or wheelchair users to enter the carriageway to pass an obstruction.

Only where it is permitted and enough width remains for traffic to pass safely. Never stop or park where the vehicle would create danger, obstruct visibility or prevent other vehicles from passing.

Follow temporary signs, signals, barriers and instructions from authorised workers. Temporary traffic controls may replace the normal priority or lane arrangement.

Reduce speed further, increase the following distance and be prepared for a stopped vehicle beyond the narrowing. Use the required lights without dazzling approaching road users.

It means that drivers travelling in your direction have priority through the narrow passage over drivers approaching from the opposite direction.

It is commonly a rectangular sign showing two arrows in opposite directions. The larger or lighter arrow represents the direction that has priority, while the other arrow represents oncoming traffic.

It is used at a bridge, roadworks area, traffic-calming feature or another narrow section where vehicles travelling in opposite directions cannot pass safely.

Drivers approaching from the opposite end normally see a corresponding sign requiring them to give way to oncoming traffic.

No. Traffic may use the road in both directions, but only one direction should normally pass through the narrow section at a time.

No. It applies only to the particular narrow section associated with the sign.

No. It regulates priority between opposing traffic at the narrowing. Traffic lights, intersection signs and ordinary priority rules remain applicable elsewhere.

No. Drivers must respect the applicable speed limit and approach slowly enough to stop safely if the passage is occupied.

Not normally. You may continue when the passage is clear, but you must slow or stop when necessary to avoid danger.

No. Priority is a right to proceed before approaching traffic, not an obligation to continue. Wait when entering would create danger or block the passage.

Reduce speed and allow the vehicle enough room to leave. Do not enter simply because your sign gives you priority if doing so would trap the other vehicle or cause a collision.

No. Drivers must avoid creating danger. When another vehicle is already committed to the passage, the safest solution may be to wait until it has cleared.

The driver facing the priority sign may normally proceed first, while the opposite driver must wait. Both drivers should reduce speed and make sure the other has understood the situation.

It normally applies to all drivers, including cyclists and motorcyclists, but local law may define the exact road users covered.

Yes. Do not pass a cyclist in the narrow section unless the required safe lateral distance can be maintained.

Allow additional width and time. Buses, trucks and vehicles towing trailers may need most or all of the available road space.

Yes. Drivers must remain alert for pedestrians, particularly where a pavement or verge also becomes narrow or unavailable.

No. It regulates opposing traffic only. Overtaking remains subject to the ordinary rules, and it is often unsafe near a narrow passage.

Only where local law permits it and sufficient space remains. Stopping or parking must not block the passage or create danger.

Follow the traffic lights. Active temporary signals or instructions from authorised workers normally take precedence over the fixed priority arrangement.

Yes. Follow instructions from an authorised person even when they differ from the priority indicated by the sign.

It ends after you have passed through the narrow section controlled by the signs. The ordinary traffic rules then apply again.

It means that you must allow drivers approaching from the opposite direction to pass through the narrow section first.

The sign normally displays two arrows pointing in opposite directions. The arrow representing oncoming traffic is shown as the priority direction, although the exact sign design differs between countries.

It is commonly placed before a narrow bridge, roadworks area, traffic-calming feature or other passage where opposing vehicles cannot pass safely at the same time.

Drivers approaching from the opposite direction normally see a corresponding sign indicating that they have priority over oncoming traffic.

No. The road remains open in both directions, but traffic from one direction must wait when opposing vehicles are approaching.

No. You must stop only when necessary to give way. You may continue cautiously when the narrow passage is clear and no priority traffic is approaching.

There is no universal fixed distance. You may enter only when the oncoming driver can continue without being forced to brake, stop, reverse or leave the road.

No. Priority is determined by the traffic signs, not simply by which driver arrives first.

Continue cautiously when reversing or stopping would create greater danger. Both drivers should cooperate, but entering first does not cancel an obligation that should have been respected before entering.

Wait outside the narrow section and leave enough room for the vehicle to exit. Do not enter and force it to stop or reverse.

The driver facing the give-way sign must wait, while the driver facing the corresponding priority sign may normally proceed first.

It normally applies to all drivers, including cyclists and motorcyclists, unless local signs or regulations provide otherwise.

Yes. When the sign applies and the passage is too narrow to maintain a safe distance, wait until the cyclist has passed.

Stop before the narrow section and leave additional space. Large vehicles may require most or all of the available road width.

No. It regulates priority rather than speed. Drivers must nevertheless approach slowly enough to observe oncoming traffic and stop safely.

No. It applies only between opposing traffic at the narrow passage. Priority at nearby intersections is determined separately.

The sign does not itself create an overtaking prohibition, but overtaking is normally unsafe when the road width or visibility is limited.

Only where local law permits it and sufficient space remains. A vehicle must not block the passage or force other traffic into danger.

Follow the active traffic lights. Temporary signals controlling alternating traffic normally take precedence over the fixed priority signs.

Follow the authorised person’s instructions. Those instructions normally take precedence over traffic lights, signs and ordinary traffic rules.

The obligation ends after the narrow passage controlled by the signs has been cleared. The ordinary traffic rules then apply again.

A pedestrian crossing is a designated place for pedestrians to cross a road. It may be controlled by traffic lights or operate without signals.

It may be indicated by white road markings, traffic signs, flashing lights, pedestrian signals or a raised crossing. Its appearance varies between countries.

A zebra crossing is a type of pedestrian crossing marked by broad contrasting stripes or rectangles. Not every pedestrian crossing uses this design.

Not universally. Priority depends on local law, traffic signals and whether the pedestrian is already crossing or clearly preparing to cross.

This depends on local law. In many countries, drivers must give way when a pedestrian is clearly intending or preparing to enter the crossing.

Reduce speed, observe both sides of the road and be prepared to stop. Pay particular attention to children, older people and persons with limited mobility.

No. Do not enter when traffic ahead may force you to stop on the crossing and block pedestrians.

Stop before the crossing or before the applicable stop line. Leave the crossing completely clear.

Overtaking may be prohibited, particularly when another vehicle has stopped or slowed for the crossing. Even where no specific prohibition applies, overtaking is unsafe when pedestrians may be hidden from view.

Normally not. Stopping or parking on or immediately before a crossing can obstruct pedestrians and hide them from approaching drivers.

Not by itself. Drivers must respect the applicable speed limit and reduce their speed further when necessary to stop safely.

Yes. Drivers and pedestrians must follow the signals applying to them. Drivers must still allow pedestrians who lawfully started crossing to finish safely.

No. Pedestrians must wait when the pedestrian signal prohibits them from entering the road.

A pedestrian who entered lawfully should continue at a normal pace. Drivers must allow the crossing to be completed safely.

This depends on local law. In many countries, a person riding a bicycle is treated as a driver and does not receive pedestrian priority. A cyclist walking beside the bicycle is normally treated as a pedestrian.

Not automatically. A separate cycle crossing, cycle path or combined crossing may be indicated by additional markings or signs.

Some countries require pedestrians to use a crossing when one is located within a specified distance. Other countries allow crossing elsewhere when it can be done safely.

No. Pedestrians should cross without unnecessary delay and should not obstruct traffic by stopping or lingering on the road.

The raised surface itself does not necessarily determine priority. Drivers and pedestrians must follow the crossing markings, signs, signals and local rules.

Check for pedestrians approaching from both sides and give way where required. Turning drivers should not focus only on motor traffic.

Observe approaching traffic, make sure drivers have sufficient time to react and cross carefully. Priority does not remove the need to avoid stepping into the path of a vehicle that cannot stop safely.

A railway crossing is a place where a road or path crosses railway tracks at the same level.

It may also be called a level crossing or, particularly in North America, a railroad crossing.

It may be indicated by warning signs, crossbuck signs, barriers, flashing lights, bells or road markings. The design differs between countries.

A protected crossing uses full or partial barriers to block road traffic when a train approaches. A crossing without barriers relies on signs, lights, bells or the road user’s own observation.

Not necessarily. You must stop when required by lights, barriers, signs, an approaching train or an authorised person. At an unprotected crossing, slow down and proceed only after checking that no train is approaching.

Flashing red lights mean stop and do not enter the crossing. Remain stopped until the signal permits you to continue.

No. Do not enter while a barrier is lowering, rising or closed. Wait until the crossing is fully open and all prohibiting signals have stopped.

No. Never drive, cycle or walk around or underneath a closed or moving barrier.

A warning bell or audible signal normally means that the crossing is closing or that a train is approaching. Do not enter the crossing while it is sounding.

In some countries, a flashing white light indicates that the crossing equipment is operating and road users may pass when the route is clear. Its exact meaning depends on local law.

Reduce speed, look and listen carefully in both directions and cross only after making sure that no train or other rail vehicle is approaching.

Not automatically. Another train may approach on a second track. Wait until all warning signals stop and the crossing is fully open.

Do not enter the crossing unless there is enough room beyond the tracks for your entire vehicle. Never rely on traffic moving before a train arrives.

No. Railway tracks must always remain clear. Do not stop because of congestion, traffic lights or another obstruction beyond the crossing.

Overtaking is often prohibited or restricted because another vehicle can obstruct the view of an approaching train or warning signal. Follow local signs and overtaking rules.

No. Stopping or parking on the tracks creates an immediate and potentially fatal danger.

Yes. Pedestrians and cyclists must obey barriers, lights, bells and authorised personnel in the same way as other road users.

Where possible, cross the rails at an angle close to 90 degrees. Rails can trap a bicycle wheel, especially when they are wet or cross the road diagonally.

Make sure the entire vehicle and any trailer can clear the crossing without stopping. Consider the available space, road gradient, turning room and traffic beyond the tracks.

Observe all height restrictions and warning signs. Electrified railway lines may have overhead equipment that can be struck by an excessively high vehicle or load.

Treat the crossing with extreme caution. Do not assume that no train is approaching merely because the lights or barriers are not operating.

Evacuate everyone immediately, move well away from the railway and contact the emergency services or railway operator. Do not remain in the vehicle or return for belongings.

Not always. A railway crossing normally crosses tracks that are separate from the carriageway, while tram or street-running railway tracks may form part of the road itself.

It requires drivers to follow the direction or one of the directions shown by the arrow or arrows.

It is commonly a blue circular sign with one or more white arrows. Colours and designs may differ in some countries.

It normally means that drivers must continue straight ahead and may not turn in another direction at that location.

It normally requires drivers to turn or proceed in the direction shown by the arrow.

Drivers may choose one of the displayed directions. Any direction not shown is prohibited.

It requires drivers to pass the traffic island, barrier, roadworks equipment or other obstruction on the side indicated by the arrow.

No. A mandatory-direction sign prescribes a movement at a particular location. A one-way sign indicates the permitted direction along a road or carriageway.

No. A mandatory sign states which direction must be followed, while a prohibition sign states which movement is forbidden. Both may produce a similar practical result.

No. Drivers must follow the applicable general, zonal or posted speed limit and reduce speed when necessary to complete the required movement safely.

No. You must still obey traffic lights, priority signs and the ordinary rules concerning oncoming traffic, pedestrians, cyclists and other road users.

It normally applies at the sign, intersection or obstacle associated with it. An advance sign may indicate that the obligation begins farther ahead.

Yes. When it is positioned above a particular lane or clearly associated with that lane, it normally applies only to traffic using that lane.

Yes. Lane arrows may require drivers to use a particular lane and follow one of the directions displayed within that lane.

Yes, when the required movement involves turning or changing position and local law requires signalling. The sign does not replace the obligation to indicate.

No. An indicator communicates your intention but does not allow you to force another road user to brake or change direction.

Not when doing so would conflict with the mandatory direction or another prohibition. Drivers must follow the permitted route shown by the signs and markings.

No. Reversing must not be used to evade a mandatory direction. Continue along a lawful route and turn around later where permitted.

Cyclists are normally treated as drivers and must obey the sign unless a supplementary panel or local rule expressly exempts them.

Yes. Supplementary signs may exempt or separately regulate cyclists, public transport or other specified categories where local law permits this.

Do not enter a closed or unsafe route. Stop where safe and follow temporary signs, traffic lights or instructions from authorised personnel.

Not normally. Traffic lights determine when traffic may proceed, while the mandatory-direction sign determines which movement is permitted.

Yes. Instructions from an authorised traffic officer normally take precedence over traffic signs and ordinary traffic rules.

Yes. Properly placed temporary signs at roadworks, incidents or events must be obeyed.

It requires vehicles carrying specified dangerous goods to follow a designated route suitable for their cargo and any applicable tunnel restrictions.

The obligation is normally completed after the driver has followed the required direction at the intersection or passed the obstacle on the indicated side.

A school area is a road or group of roads near a school where drivers should expect large numbers of children, pedestrians, cyclists and stopping vehicles.

It may be identified by school warning signs, speed-zone signs, flashing lights, road markings, coloured surfacing or traffic-calming measures. The signs differ between countries.

No. Special school-area rules normally apply only where signs, signals or local legislation establish them.

There is no universal school-area speed limit. The applicable limit depends on the country, region, signs and whether a variable restriction is active.

Some limits apply permanently, while others apply only during displayed times or when flashing or variable signs are active. Drivers must observe the actual sign arrangement.

Yes, when necessary. The displayed speed is a maximum. Children, congestion, poor visibility or vehicles stopping near the school may require a much lower speed.

Children may have difficulty judging speed and distance, may be hidden by parked vehicles and may enter the road unexpectedly.

Reduce speed early, increase your observation and be prepared for children crossing, cyclists changing direction, vehicle doors opening and cars stopping suddenly.

No. Priority depends on crossings, traffic lights, authorised crossing supervisors and local rules. Drivers must nevertheless take exceptional care to avoid endangering children.

Yes. Drivers and other road users must follow lawful instructions given by an authorised person controlling traffic for children.

This depends on local pedestrian rules. Drivers should remain prepared for children to cross unexpectedly, even where they are required to use a nearby crossing.

Not by itself. A school warning sign alerts drivers to children but does not normally create the legal effect of a pedestrian crossing.

No. Traffic lights, priority signs and the ordinary intersection rules remain applicable unless another traffic arrangement provides otherwise.

Overtaking may be restricted by signs or local law. Even where it is permitted, drivers should not overtake when children, crossings, limited visibility or stopped vehicles make the manoeuvre unsafe.

Only where stopping is permitted and can be completed safely. Do not stop on a crossing, pavement, bike path, bus stop or another prohibited or dangerous location.

Follow the parking signs and markings. Do not block entrances, pavements, bike paths, crossings, visibility or access for buses and emergency vehicles.

It blocks traffic and visibility and may force children to walk between moving vehicles or enter the road from behind an obstruction.

Expect children to enter or leave the vehicle and possibly cross the road. Reduce speed and follow any special warning lights, signs or local school-bus rules.

Normally, yes. They must follow the applicable road, bike-path, speed and priority rules. Drivers should expect inexperienced young cyclists.

No. A school area normally remains open to traffic under special caution or speed rules. A school street temporarily restricts or excludes motor traffic during specified periods.

Not universally. A school area may form part of a Zone 30, use another speed limit or have a variable restriction that applies only at particular times.

They normally end at an end sign, at the end of the stated time period or when the variable signal is no longer active. The surrounding road rules then apply.

In right-hand traffic countries, overtaking normally takes place on the left. In left-hand traffic countries, it normally takes place on the right. National rules can provide exceptions in particular situations.

Make sure there is sufficient visibility and space, check mirrors and blind spots, ensure that nobody behind has already started overtaking and confirm that you can safely return to your normal position after passing.

Do not overtake where signs or road markings prohibit it or where visibility, approaching traffic, intersections, crossings, bends, hills or other conditions make the manoeuvre unsafe.

It warns that animals may enter or cross the road in the area ahead.

Depending on the symbol and local conditions, it may refer to deer, cattle, horses, sheep, goats, wild boar or other animals.

It is commonly a triangular warning sign displaying the silhouette of an animal. The species shown may indicate the type of animal most likely to be encountered.

No. It indicates an increased likelihood of animals crossing, not that animals will be present every time.

No. The normal posted or general speed limit remains applicable, but drivers must reduce speed when necessary to react safely.

No automatic priority is created by the warning sign. Drivers must nevertheless avoid danger and allow animals already on the road to pass safely.

Reduce speed, increase your following distance and scan the road, verges, fields and vegetation for movement or reflected eyes.

Animal activity is often greater around dawn, dusk and darkness, although animals may cross at any time.

Many animals travel in groups. When one animal crosses, others may follow immediately from the same direction.

Avoid unnecessary horn use or engine revving because it may frighten an animal and make its movement less predictable. Use a warning only when reasonably necessary to prevent danger.

Use the appropriate lights without dazzling other road users. When an animal is visible, reduce speed and avoid relying on full beam to make it move away.

Slow down smoothly, stop when necessary and allow it enough time and space to leave. Avoid sudden acceleration or aggressive steering.

Avoid an uncontrolled swerve that could cause a collision with another vehicle, tree, barrier, cyclist or pedestrian. Brake firmly while maintaining control and steer only when a safe escape path is clearly available.

Pass only when the animals and their handlers have sufficient space. Drive slowly, avoid noise and be prepared for an animal to change direction unexpectedly.

Reduce speed, leave a large lateral distance and pass quietly. Avoid sounding the horn, accelerating sharply or passing when oncoming traffic prevents sufficient clearance.

Follow lawful instructions from an authorised person and cooperate with handlers controlling animals on or across the road.

The warning sign does not necessarily prohibit overtaking, but overtaking should be avoided when animals, limited visibility or approaching traffic make the manoeuvre unsafe.

Maintain enough following distance to see beyond the vehicle ahead. Be prepared for it to brake suddenly when an animal enters the road.

Reduce speed, keep both hands firmly in control and avoid sudden movements. Animals may react unexpectedly to quiet or fast-approaching two-wheeled vehicles.

Stop safely, activate the hazard warning lights and check for injured people. Contact the emergency services or police when necessary and do not approach a wounded wild animal, which may defend itself.

Normally not. Keep a safe distance and allow the police, wildlife authorities or an animal-rescue service to handle it.

Yes. Drivers remain responsible for observing the road and adjusting their speed even where no animal warning sign is displayed.

It warns that rocks or stones may fall onto the road or may already be lying on the carriageway.

It is commonly a triangular warning sign showing rocks falling from a steep slope. The exact colour and design vary between countries.

No. It indicates an increased risk. The road may be clear, contain stones from an earlier fall or become dangerous without additional warning.

Not necessarily. It may also warn about loose or fallen stones already present on the road.

Rockfalls may be caused by erosion, heavy rain, frost and thawing, storms, ground movement, vegetation loss, roadworks or natural instability.

The risk may increase during or after heavy rain, freezing weather, rapid thawing, strong winds, earthquakes or work on a nearby slope.

No. It normally warns of danger rather than setting a numerical limit. Drivers must reduce speed when necessary to react safely.

No. Traffic lights, priority signs and the ordinary priority rules remain applicable.

Reduce speed smoothly, increase your following distance and watch the road surface, slope, barriers and vehicles ahead for signs of falling or fallen material.

No. Leave additional distance so you can see stones on the road and react if the vehicle ahead brakes or changes direction suddenly.

Avoid unnecessary stopping in the exposed section. Stop only when required by traffic, an obstruction or an emergency, and choose the safest available location.

The warning sign does not necessarily prohibit overtaking, but drivers should avoid overtaking when visibility, road width, loose stones or the risk of falling material makes it unsafe.

Avoid doing so. Even where parking is not expressly prohibited, remaining beneath an unstable cliff or slope may expose the vehicle and its occupants to unnecessary danger.

Reduce speed without harsh steering or braking. Pass only when there is enough clear space and visibility; otherwise, stop at a safe distance and report the obstruction.

Avoid a sudden uncontrolled swerve. Brake while maintaining control and steer around the obstruction only when the adjacent space is clearly safe.

Stop at a safe distance, activate the hazard warning lights when appropriate and contact the police, road authority or emergency services. Do not attempt to drive over unstable debris.

Do not enter the affected section. Stop well before the danger where possible and move away only when this can be done safely without reversing blindly or entering another hazard.

Do not stand near the unstable slope or falling material. Leave the vehicle only when remaining inside creates a greater immediate danger and a protected escape route is available.

Normally not. A stone may be too heavy, unstable or followed by additional falling material. Keep a safe distance and allow trained services to clear the road.

Even small stones can cause a rider to lose balance or damage a tyre. Riders should reduce speed, avoid sudden steering and keep a greater distance from other traffic.

No. Nets, barriers and retaining structures reduce the risk but cannot guarantee that every stone will be contained.

It may indicate how far ahead the danger begins. Another panel may indicate the length of the hazardous road section.

Keep control of the vehicle, stop at a safe location and activate the hazard warning lights. Check the tyres, wheels and underside only when it is safe and report any dangerous debris.

No. Drivers must remain attentive wherever roads run beside cliffs, cuttings or steep slopes, even when no warning sign is displayed.

An aircraft warning alerts drivers that aircraft may pass at low altitude over or near the road.

They are commonly used near airports, airfields and flight paths where low-flying aircraft or sudden aircraft noise may surprise road users.

Continue to concentrate on the road and avoid sudden braking, steering or other unnecessary manoeuvres because of the aircraft.

A road curve is a section where the road changes direction to the left or right.

It may be indicated by a triangular warning sign showing a curved line. The symbol normally indicates whether the first curve turns left or right.

A double curve consists of two curves in opposite directions. The warning sign normally shows the direction of the first curve.

Yes. A double-curve symbol may also warn of a longer sequence of successive curves. A supplementary panel may indicate the length of the winding section.

No. It normally warns of danger rather than setting a numerical limit. Drivers must still reduce speed when the permitted maximum would be unsafe.

Reduce speed before entering the curve, while the vehicle is travelling straight and has maximum stability.

No. Harsh braking in a curve can reduce stability and grip. Complete most braking beforehand and use smooth adjustments where necessary.

Maintain a controlled speed through the curve. Accelerate smoothly only when the exit becomes visible and the vehicle is stable.

Look towards the path you intend to follow and the visible exit of the curve. Continue checking the road surface, lane position and nearby traffic.

Yes. Do not cross the centre line or cut across another lane, even when this would make the curve appear easier to negotiate.

Buildings, vegetation, slopes, barriers and the road alignment may hide oncoming traffic, cyclists, pedestrians, stopped vehicles or debris.

Choose a speed that allows you to remain in your lane and stop within the distance you can see to be clear. The safe speed may be far below the legal maximum.

An advisory speed is a recommended safe speed for negotiating the curve under suitable conditions. It is not necessarily the legal maximum speed.

They reduce tyre grip and increase the risk of skidding. Reduce speed earlier, use smooth controls and leave additional distance from other vehicles.

Avoid sudden braking or steering. Reduce speed smoothly and follow a clear path without entering another traffic lane.

Do not overtake when visibility is insufficient to see approaching traffic and complete the manoeuvre safely. Local law, signs and continuous road markings may also prohibit overtaking.

Only where it is permitted and the vehicle remains clearly visible. Stopping or parking in a poorly visible curve may create a serious hazard and is often prohibited.

No. Leave enough distance to react if the vehicle ahead brakes for a hidden obstruction or a sharper part of the curve.

Motorcycles require grip for both cornering and braking. Riders should reduce speed before the curve, choose a stable line and avoid painted markings, gravel and slippery surfaces.

A trailer may sway, track closer to the inside of the curve or become unstable when speed and steering inputs are excessive. Enter slowly and steer smoothly.

Buses and trucks may move closer to lane boundaries because of their length and width. Other drivers should avoid travelling beside them through a tight curve.

Reduce speed, move safely towards your side of the road and avoid a sudden manoeuvre that could cause another collision. Sound a warning only when reasonably necessary.

No. Drivers must assess every curve and adapt their speed even when no warning sign is displayed.

A road chevron is a V-shaped or arrow-shaped marker used to guide drivers through a curve or another sharp change in road direction.

It is normally displayed on a rectangular board using strongly contrasting colours. Several chevrons may be placed in sequence around a curve.

The point of the chevron indicates the direction in which the road continues. A chevron pointing left guides traffic through a left curve, while one pointing right guides traffic through a right curve.

They are generally placed along the outside of a curve, facing approaching traffic so that drivers can clearly see the road alignment.

A series of chevrons visually traces the curve and helps drivers judge its direction, length and changing alignment.

No. A curve-warning sign normally warns drivers before the curve. Chevron boards are usually positioned within or around the curve to guide drivers through it.

No. It guides drivers through the change in direction but does not normally introduce a numerical speed limit.

Not by itself. A separate advisory-speed or speed-limit sign may indicate an appropriate or legally required speed.

No. Traffic lights, priority signs and the ordinary priority rules remain applicable.

It normally indicates that the curve requires additional visual guidance. Drivers should expect a noticeable or potentially sharp change in direction.

Not directly. The number and spacing depend on the length, radius and design of the curve and on the road authority’s signing standards.

Not necessarily. Larger boards may be used where approach speeds are higher or where greater visibility is needed.

Reduce speed before the curve, observe the direction of the boards and remain within your traffic lane.

No. Complete most braking before entering the curve and use smooth steering, braking and acceleration while following it.

No. The boards normally mark the outside edge of the curve. Follow the road around them rather than steering towards them.

No. Remain within your lane and do not enter the path of oncoming traffic.

The chevrons do not automatically prohibit overtaking, but overtaking is unsafe when the curve restricts visibility or available road width.

Reflective material makes the boards easier to see in darkness and poor weather when illuminated by vehicle headlights.

Yes. Some high-risk curves use illuminated or flashing chevrons to make the change in direction more conspicuous.

Yes. Their colours and design vary between countries, but contrasting colours are used to make the direction clearly visible.

Reduce speed before the curve, choose a stable path and look through the turn. Do not focus exclusively on the chevrons or allow the motorcycle to cross the centre line while leaning.

No. Drivers must assess every curve and select a safe speed whether or not chevron boards are installed.

Wrong-way driving means travelling against the legally permitted direction of traffic.

It can occur on one-way streets, divided roads, motorways, slip roads, tunnels, car parks and temporary traffic arrangements.

Other drivers do not expect approaching traffic in their lane, and the combined speeds can make a head-on collision extremely severe.

Look for no-entry signs, one-way signs, mandatory-direction signs, lane arrows and road markings. Motorway exits may also have repeated signs or warning systems facing the wrong direction.

Entering past a no-entry sign can cause wrong-way driving, but the term also covers turning around on a divided road or using the wrong carriageway without passing such a sign.

Normally, yes. However, signs may expressly permit certain road users, such as cyclists or public transport, to travel in the opposite direction.

No. A cyclist, bus or other road user travelling in an expressly authorised contraflow lane or direction is using the road legally.

Yes. Temporary signs, barriers, lane signals and markings may redirect traffic onto another lane or carriageway. Follow the temporary arrangement rather than the usual road layout.

Reduce speed immediately, keep as far as safely possible towards the outer edge of your carriageway and avoid sudden lane changes. Warn the police or emergency services as soon as this can be done safely.

No. Do not block, chase or turn after the vehicle. Protect yourself and allow trained emergency services to intervene.

A brief warning may help the driver recognise the error, but avoid prolonged or aggressive signalling that could cause panic or an unpredictable manoeuvre.

Use the horn only when reasonably necessary to warn of immediate danger. Your first priority is to reduce speed and create as much safe space as possible.

Normally not. Sudden stopping may cause a rear-end collision. Slow down and move towards a safe shoulder, refuge or other protected location where possible.

Reduce speed, stop overtaking, increase your following distance and remain in the lane or position recommended by the local authorities or warning system.

Avoid unnecessary use of lanes nearest opposing or central traffic when a wrong-way driver has been reported. Follow local emergency guidance and electronic signs.

Slow down immediately, activate the hazard warning lights and use dipped headlights where required. Move to the safest available edge or shoulder and stop.

No. Increasing speed greatly increases the collision risk. Stop safely and wait for instructions from the police.

No. Do not turn across live lanes, cross a central reservation or attempt to correct the mistake through another dangerous manoeuvre.

No. Reversing against traffic or along a motorway slip road creates additional danger. Stop safely and contact the emergency services.

This depends on the location and immediate danger. Remain protected from moving traffic and follow instructions from the emergency services. Do not stand in a live lane.

Stop safely before using a handheld phone. A passenger may call while the vehicle is moving when local law permits and this can be done without distracting the driver.

Report the road name or number, direction, nearby exit or landmark, vehicle description and the wrong-way driver’s approximate location and direction.

Possible causes include confusion at junctions, poor visibility, unfamiliar roads, impairment, navigation errors, turning around illegally or deliberately ignoring traffic signs.

Slow down at unfamiliar junctions, read signs before turning, verify the road layout and do not rely exclusively on navigation instructions.

No. Traffic signs, signals, markings and instructions from authorised persons always take precedence over navigation guidance.

Roadworks are construction, maintenance, repair or inspection activities carried out on or beside a road.

They may be indicated by a roadworks warning sign, cones, barriers, temporary markings, flashing lights, machinery or workers.

No, not by itself. A separate temporary or permanent speed-limit sign establishes the legal maximum speed.

Yes, when necessary. Narrow lanes, workers, machinery, poor surfaces, congestion or limited visibility may require a substantially lower speed.

Yes. Correctly installed temporary signs must be obeyed for as long as they are in force.

Follow the temporary markings that guide traffic through the works. Local law determines how they take priority over older permanent markings.

Yes. Stop at the line or signal when required and do not proceed until the applicable light permits it.

Obey instructions from workers or controllers who are legally authorised to regulate traffic. Their signals may temporarily replace the ordinary traffic arrangement.

Observe the signs and lane arrows, check mirrors and blind spots and merge safely into the continuing lane.

Zipper merging means that vehicles in an ending or blocked lane merge alternately with vehicles in the continuing lane near the narrowing during congested traffic.

This depends on local law and traffic conditions. Where zipper merging applies during congestion, use both lanes and merge near the narrowing. In flowing traffic, change lanes when a safe gap is available.

Without another traffic control, the driver whose route is obstructed commonly has to yield before moving into the path of approaching or adjacent traffic.

Yes. Temporary signals may allow only one direction at a time through a narrow section.

No. Do not enter a narrow section, intersection or temporary crossing when congestion may leave you stopped inside it.

No. Do not move, pass around or ignore traffic-control equipment unless an authorised person instructs you to do so.

Only when signs and markings permit it and sufficient width and visibility remain. Overtaking is often unsafe in narrow or shifted lanes.

Only where temporary and permanent signs permit it. Do not obstruct workers, machinery, emergency access or temporary pedestrian and cycle routes.

Expect workers to enter the road, machinery to move or reverse and vehicles to leave the worksite. Reduce speed and leave generous space.

Follow the signed temporary cycle route or lane. Check surrounding traffic carefully before leaving a closed or obstructed bike path.

Use the designated temporary walkway or crossing and follow barriers, signs, signals and instructions from authorised personnel.

Traffic may brake suddenly because of queues, lane changes, machinery, debris or changing signals. Additional distance provides more time to react.

Move to the safest available location where possible, activate the hazard warning lights and contact assistance. Avoid standing in a live or narrow traffic lane.

Yes. Rules concerning safe speed, following distance, signalling, priority and vulnerable road users continue to apply unless a lawful temporary arrangement changes them.

It prohibits vehicles whose total height exceeds the displayed value from continuing beyond the sign.

It is commonly a circular regulatory sign showing a height in metres, feet or another local unit between vertical arrows.

The height includes the vehicle, its load and any attached equipment, such as roof boxes, bicycles, machinery, antennas or raised loading equipment.

Yes. Every part of a vehicle combination must fit beneath the restriction, including the towing vehicle, trailer and load.

Not necessarily. Road authorities may display a lower value than the measured clearance to provide a safety margin.

The legal wording commonly prohibits vehicles higher than the displayed value, but drivers should not attempt to pass without a practical safety margin. Measurement errors, movement and road conditions can reduce the available clearance.

Loading, tyre pressure, suspension settings, raised equipment, replacement tyres and road movement can alter the vehicle’s total height.

Yes. The vehicle may rise or lower depending on its suspension mode, speed and load. Use the maximum travelling height when planning the route.

Yes. An arched bridge, tunnel roof or overhead structure may provide different clearance in each lane. Follow lane-specific signs and markings.

Yes. Clearance may be lower near the edge of an arch or where the road slopes sideways. Remain within the authorised marked path.

Yes. A new road surface can raise the road level and reduce the space beneath a bridge or structure.

Yes. Material on the road can raise the vehicle or restrict the usable route. Flooding may also conceal the road surface or another hazard.

They are common at bridges, tunnels, car parks, loading areas, gateways, railway structures and roads with overhead equipment.

It is normally a prohibition. A vehicle that exceeds the displayed height may not pass.

No. The applicable road or posted speed limit remains in force, although drivers should approach cautiously.

No. Traffic lights, priority signs and ordinary priority rules remain applicable.

Yes. An advance sign may show the restriction and the distance to it so that high vehicles can choose another route.

Do not continue. Stop where safe and follow the signed diversion or another suitable route. Do not reverse into traffic without assistance.

No. Navigation may contain outdated or incomplete vehicle restrictions. Traffic signs and the actual road conditions always take precedence.

Yes. Drivers of trucks, buses, motorhomes and vehicles carrying roof loads should know and, where useful, display the vehicle’s maximum travelling height inside the cab.

Stop before the restriction in a safe place and verify the vehicle’s height. Choose another route when safe clearance cannot be confirmed.

Only when signs and markings permit it and the manoeuvre can be completed safely. Do not cross a closed lane, continuous line or opposing traffic merely to gain clearance.

Only in a safe place and when the equipment can be secured correctly afterwards. Never stop beneath the structure or in a live lane to alter the vehicle.

Stop immediately where safe, activate the hazard warning lights and contact the emergency services or police. Do not continue because the vehicle, load or structure may be unstable.

No, when damage may have occurred. Keep away from the structure and follow instructions from the police, road authority or railway operator.

It prohibits vehicles or vehicle combinations whose total width exceeds the displayed value from continuing beyond the sign.

It is commonly a circular regulatory sign showing a width in metres, feet or another local unit between horizontal arrowheads.

The width includes the vehicle, its load and attached equipment or objects that extend from either side.

Yes. Every part of the vehicle combination must comply, including the towing vehicle, trailer and load.

Yes, when they extend beyond the sides of the vehicle. Drivers must consider the widest point of the complete travelling vehicle.

Doors should be closed while driving. The ordinary travelling width is measured with the vehicle properly configured for road use.

Not necessarily. It shows the maximum legally permitted vehicle width. The physical passage may be wider, but drivers should not assume that additional clearance is available.

The sign normally prohibits vehicles wider than the displayed value. However, drivers should not attempt to pass without a practical safety margin because measurements and vehicle movement may vary.

A vehicle may move sideways because of steering corrections, road camber, wind, suspension movement or an uneven surface.

Yes. Walls, barriers, columns, bends, kerbs and protruding structures may make one part narrower than another.

Yes. Lane-specific signs may impose different restrictions where the available width varies between lanes.

Yes. Barriers, machinery and shifted lanes may reduce the usable width. Temporary width-limit signs must be obeyed.

It is normally a prohibition. A vehicle that exceeds the displayed width may not pass.

No. The applicable general, zonal or posted speed limit remains in force, although drivers should approach narrow passages slowly.

No. Traffic lights, priority signs and the ordinary priority rules remain applicable.

Yes. An advance sign may show the restriction and the distance to it so that wide vehicles can choose another route.

Do not continue. Stop where safe and use the signed diversion or another suitable route.

No. Navigation information may be outdated or incomplete. Traffic signs and actual road conditions always take precedence.

Yes. Drivers of trucks, buses, agricultural vehicles, motorhomes and vehicles carrying wide loads should know the maximum travelling width before beginning the journey.

Measure the widest part of the vehicle and load in its normal travelling configuration. Consider equipment, securing devices and any load extending beyond the bodywork.

Yes. Mirrors, arms, steps or machinery designed to be folded or retracted should be placed in the legally required travelling position before driving.

Only when signs and markings permit it and the manoeuvre can be completed safely. Do not cross a closed lane, continuous line or opposing traffic to avoid the restriction.

Stop before the restriction in a safe place and verify the vehicle’s dimensions. Choose another route when adequate clearance cannot be confirmed.

A guide may help during a slow manoeuvre in a controlled location, but the driver remains responsible. The guide must remain visible and stay away from moving traffic and crushing hazards.

Stop immediately where safe, activate the hazard warning lights and contact the police or emergency services. Do not continue when the vehicle, load or structure may be damaged or unstable.

A length limit indicates the maximum vehicle or vehicle-combination length permitted beyond the restriction. Vehicles exceeding the displayed value may not proceed.

Normally the relevant measurement applies to the complete vehicle or vehicle combination covered by the sign. National rules determine precisely how trailers and projecting loads are included.

They are used where long vehicles could have difficulty negotiating the road safely, such as on narrow streets, tight bends, constrained junctions or other locations with limited manoeuvring space.

It prohibits vehicles or vehicle combinations whose relevant mass exceeds the value displayed on the sign.

It is commonly a circular regulatory sign showing a mass in tonnes, kilograms or another local unit.

It is normally a prohibition. A vehicle exceeding the displayed limit may not continue beyond the sign.

Actual loaded mass is the weight of the vehicle as it is currently travelling, including the vehicle itself, its load, driver, passengers and other relevant equipment.

Maximum authorised mass is the highest total mass at which the vehicle is legally approved to operate. It is normally recorded in the vehicle documents.

No. A lightly loaded vehicle may have an actual mass below its maximum authorised mass. A restriction may legally refer to either measurement, depending on the sign and local law.

Yes. Cargo, passengers, fuel, equipment and other carried items may all contribute to the vehicle’s actual loaded mass.

Where the restriction concerns actual loaded mass, the driver and other occupants are normally included.

This depends on the wording of the restriction. It may apply to each vehicle separately or to the combined mass of the complete vehicle combination.

An axle-weight limit restricts the amount of mass carried by one axle or axle group rather than the total mass of the vehicle.

A vehicle may comply with the total weight limit while too much of its load is concentrated over one axle, creating excessive stress on the road or bridge.

They are often used at bridges, weak roads, historic centres, tunnels, temporary structures and roads unsuitable for heavy traffic.

Not necessarily. The displayed legal limit may include engineering and safety margins and should not be interpreted as the structure’s exact failure point.

A sign normally prohibits vehicles exceeding the displayed value. The driver must still be certain that the relevant mass does not exceed it.

The most reliable method is to use an authorised or suitable weighbridge. Vehicle documents alone normally show approved limits rather than the vehicle’s current loaded mass.

An estimate may help with planning, but it must include the vehicle, fuel, occupants, equipment, load and trailer. A weighbridge is preferable when the remaining margin is small.

No. Moving cargo within the vehicle does not change its total mass, but it can change the load carried by each axle.

Yes, when done lawfully and safely. The vehicle may continue only after its relevant mass complies and the remaining load is properly secured.

Yes. Temporary restrictions may protect a damaged bridge, weakened road, roadworks structure or road affected by flooding or thawing.

Yes. Lane-specific signs may direct heavier vehicles towards a lane or structure designed to carry them.

Yes. Advance signs may give the distance to the restriction or indicate a diversion so affected vehicles can choose another route.

No. The applicable general, zonal or posted speed limit remains in force.

No. Traffic lights, priority signs and ordinary priority rules remain applicable.

Do not continue. Stop where safe and follow a signed diversion or another route suitable for the vehicle’s mass.

No. Navigation information may be incomplete or outdated. Traffic signs and official restrictions always take precedence.

Only when reversing is lawful and can be completed safely. Use assistance where necessary, particularly with a long or heavy vehicle combination.

The vehicle may damage the road or structure and may be stopped, fined, unloaded or prohibited from continuing under local law.

It warns that vehicle speeds may be measured or enforced on the road ahead or throughout a specified section.

No. A speed-limit sign establishes the maximum legal speed. A radar sign only warns that compliance with an applicable limit may be monitored.

Check the most recent speed-limit sign, variable sign, speed-zone sign or general limit applying to the road and vehicle category.

No. It does not normally change the existing limit. Drivers must nevertheless travel more slowly when traffic, visibility, weather or road conditions require it.

It may announce a permanent camera, a mobile-control area or a section where enforcement can occur. The exact meaning depends on the country and sign design.

No. Drivers should never rely on assumptions about whether equipment is operating and should respect the speed limit at all times.

A fixed speed camera is permanently installed at a particular location and measures the speed of passing vehicles.

A mobile speed camera is temporarily positioned in a police vehicle, trailer, roadside unit or another approved location.

Lidar uses laser pulses to measure the speed and position of vehicles. It may be used by police officers or in temporary automatic installations.

Average-speed enforcement records a vehicle at two or more points and calculates its average speed across the controlled section.

No. Average-speed enforcement considers the travel time across the complete measured section rather than speed at only one point.

Yes. Some systems monitor vehicle speed and whether a vehicle passes a red traffic signal.

No. Some authorities announce speed cameras, while others permit enforcement without advance warning. The rules differ between countries and regions.

Yes. The absence of a warning sign does not normally prevent police or authorised authorities from carrying out a lawful speed check.

The applicable limit remains a maximum rather than a target. Drivers must reduce speed whenever travelling at that limit would be unsafe.

No. Check your speed and reduce it smoothly when necessary. Sudden braking can cause a rear-end collision.

Only while remaining within the applicable limit and driving safely. The restriction may continue, and another camera or average-speed section may follow.

No. Passing a camera or radar sign does not end the applicable speed restriction.

A radar speed display measures an approaching vehicle and shows its current speed, sometimes with a colour, message or smiley symbol.

Not necessarily. Many displays are preventive devices intended to make drivers aware of their speed and may collect anonymous traffic statistics without issuing penalties.

No. The roadside display is generally informational. Drivers remain responsible for observing the vehicle’s speedometer and the legal speed limit.

Yes. The technical ability to measure a motorcycle and the method used to identify it depend on the enforcement equipment.

Yes. Modern systems may measure vehicles in one or more lanes and may distinguish between traffic directions or vehicle categories.

Yes. Heavy vehicles, buses, trailers or other vehicle categories may be subject to lower limits than passenger cars on the same road.

Release the accelerator and reduce speed smoothly and safely. Do not brake harshly or make an abrupt lane change.

A selective barrier is a physical access-control device that blocks some traffic while allowing specified road users or authorised vehicles to pass.

Common examples include fixed bollards, removable posts, folding posts, retractable bollards, gates, rising barriers and width-filtering installations.

They may prevent through traffic, protect pedestrian or cycling routes, control access to restricted areas or allow only residents, public transport, deliveries or emergency services to enter.

Not normally. The permitted users are determined by traffic signs, permits, access systems and local regulations.

Only when cycling is permitted and sufficient safe space is provided. Cyclists must follow the signs applying to the road or path.

Pedestrians may pass where pedestrian access is permitted and a safe route is available. They should not walk beneath a moving gate or through a vehicle-only opening.

Only when motorcycles are legally permitted beyond the barrier and the opening is intended for them. Being physically able to fit through does not create permission.

Emergency vehicles may have keys, remote controls, automatic recognition or another authorised method of opening the barrier. Other road users must keep the access clear.

They may enter only when local access rules, permits or traffic signs authorise them. Permission may apply only during specified hours.

A retractable bollard is a post that can rise from or lower into the road surface to control vehicle access.

It may operate through a badge, remote control, access code, number-plate recognition, timer, control centre or automatic detection system.

Only after confirming that you are authorised and the bollard is fully lowered. Do not move merely because another vehicle has activated it.

No, unless your own access is also authorised and the system clearly permits it. The barrier may rise immediately after the first vehicle.

Red lights normally require road users to stop, while another signal may indicate when passage is permitted. Follow the displayed signals and local instructions.

Stop at a safe distance and wait until it has completed its movement. Never drive, cycle or walk beneath a moving gate or across a rising bollard.

Do not force, move or drive around it. Use the intercom or contact the operator, road authority or emergency service indicated at the location.

No, unless you are specifically authorised. Removing or repositioning access-control equipment may create danger and allow prohibited traffic to enter.

No. Traffic signs and access restrictions remain applicable even when the physical barrier is temporarily open or lowered.

No. An open physical barrier does not cancel a regulatory traffic sign.

Not by itself. Drivers must follow the applicable speed limit and approach slowly enough to stop before the installation.

No. Traffic lights, priority signs and ordinary priority rules remain applicable unless another traffic arrangement indicates otherwise.

Do not stop or park where the vehicle would block authorised access, emergency services, pedestrians or cyclists.

They may be difficult to see, especially in darkness, congestion or poor weather. A collision can cause a rider to fall into nearby traffic or other obstacles.

Reduce speed, identify the intended opening and pass through in a straight and controlled line. Avoid overtaking another cyclist at the barrier.

Approach slowly, wait for the access system to respond and check for pedestrians and cyclists before crossing their route.

Stop safely, activate the hazard warning lights where appropriate and report the collision. Do not continue if the vehicle, barrier or access system may be damaged.

A low-emission zone is an area where access by more polluting vehicles is restricted in order to improve air quality.

They are intended to reduce traffic-related air pollution, particularly pollutants produced by older or higher-emitting vehicles.

Restrictions may apply to cars, vans, trucks, buses, motorcycles or other motor vehicles, depending on the local regulations.

Access commonly depends on the vehicle's fuel type, Euro emission standard, vehicle category and sometimes other technical characteristics.

A Euro emission standard indicates which European pollutant-emission requirements a vehicle satisfies. Higher Euro numbers generally represent newer and stricter emissions requirements.

Not necessarily. Low-emission zones often apply different access criteria to diesel and petrol vehicles because their pollutant-emission characteristics differ.

Fully electric vehicles are generally permitted because they produce no combustion-engine exhaust emissions while driving, although local registration or administrative requirements may still apply.

Some low-emission zones provide exemptions, temporary permits or day passes for certain vehicles or circumstances.

Traffic signs normally indicate the entrance and exit of the zone. Drivers should check the applicable restrictions before passing the entry sign.

Enforcement may use automatic licence-plate cameras, roadside controls or registration databases. The exact system varies between cities and countries.

Yes. Foreign vehicles must comply with the applicable access criteria and may also have to complete an online registration before entering.

No. Each country, region or city can establish different boundaries, emission requirements, exemptions and enforcement procedures.