Traffic rulesIceland
1. Iceland
Iceland is a Nordic island country in the North Atlantic, close to the Arctic Circle and geographically separated from mainland Europe. Traffic drives on the right, but driving conditions can change quickly because of strong winds, snow, ice and rapidly changing weather. Outside Reykjavík and other towns, drivers may encounter long stretches of open road, gravel surfaces, narrow roads and single-lane bridges. The mountainous interior is reached by seasonal highland routes, including rough F-roads that may require four-wheel-drive vehicles and can remain closed well into summer.
Icelandic is the official language and is used for place names and most text on road signs. The Icelandic alphabet includes distinctive letters such as ð, þ and æ, which foreign drivers may notice on destination signs. Two rules are particularly important when exploring the country: legally required driving lights must remain on whenever a motor vehicle is being driven, and driving away from authorised roads or tracks is generally prohibited because off-road driving can cause lasting damage to Iceland's fragile landscape.
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What is the legal alcohol limit for drivers in Iceland?
Icelandic traffic law considers a driver with a blood-alcohol concentration of 0.2‰ (0.2 g/l) or more unable to drive safely. The safest rule is therefore not to drink any alcohol before driving.
🔗 althingi.is • Iceland, Road Traffic Act 77/2019, Article 49 and child-restraint/airbag provisions
What speed limits apply to passenger cars in Iceland?
Built-up areas: The general maximum speed in built-up areas is 50 km/h, unless signs indicate another limit. Lower limits are common in residential areas.
Gravel roads: The general maximum speed on gravel roads outside built-up areas is 80 km/h, unless signs indicate another limit.
Paved rural roads: The general maximum speed on paved roads outside built-up areas is 90 km/h, unless signs indicate another limit.
What are the seat-belt and child-restraint rules in Iceland?
Seat belts are mandatory for everyone occupying a seat equipped with one while the vehicle is moving.
Children shorter than 135 cm must use an approved child seat, booster or other suitable child restraint. Choose a restraint that matches the child’s height and weight and use it according to its instructions.
A child shorter than 150 cm must not sit in front of an active frontal airbag. This restriction also applies to a forward-facing child, not only to a rear-facing baby seat.
🔗 althingi.is • Iceland, Road Traffic Act 77/2019, Article 49 and child-restraint/airbag provisions
Can you use a mobile phone while driving in Iceland?
A driver may not use a mobile phone, smart device or other distracting electronic equipment while driving without hands-free equipment.
🔗 samgongustofa.is • Icelandic Transport Authority, hands-free use of smart devices
Must cars use lights during the day in Iceland?
Yes. The legally required driving lights must always be switched on while a motor vehicle is being driven, including during daylight.
When must children use a child seat in Iceland?
Children shorter than 135 cm must use a car seat appropriate for their age, height and weight. Install it correctly and make sure the child is secured before every journey.
🔗 samgongustofa.is • Icelandic Transport Authority, driving in Iceland
Who has priority when exiting a two-lane roundabout in Iceland?
The inner lane has priority when exiting a two-lane roundabout; drivers in the outer lane must give way. Watch the other lane closely and follow the signs and markings at the individual roundabout.
🔗 samgongustofa.is • Icelandic Transport Authority, driving in Iceland
2. Motorway
A motorway is a road specially designed and signposted for motor traffic. Motorways normally have separate carriageways for opposing traffic, controlled access through designated entrances and exits, no direct access to neighbouring properties, and no level crossings with other roads, railways or paths.
Special traffic rules apply on motorways. The permitted road users, speed limits, lane rules, tolls and emergency procedures vary between countries, so drivers must follow the local traffic signs and regulations.
Wikimedia.org • Hansueli Krapf • CC BY-SA
How do people refer to a major highway in Iceland?
The Ring Road is referred to as Hringvegur and Route 1. It is a national road around Iceland; its name does not mean that the whole route has motorway conditions.
🔗 reglugerd.is • Iceland: Traffic Signs Regulation 250/2024
🔗 vegagerdin.is • Iceland: Road Administration, Ring Road
🔗 vegagerdin.is • Iceland: Road Administration, journey planning and conditions
🔗 vegagerdin.is • Iceland: Road Administration, Hringvegur (1) at Borgarnes
What speed limit applies to cars on a major highway in Iceland?
Follow the actual road surface and signs. The general maximum is 90 km/h on paved roads and 80 km/h on gravel roads outside built-up areas. Iceland’s main roads should not be assigned a foreign motorway limit.
🔗 reglugerd.is • Iceland: Traffic Signs Regulation 250/2024
🔗 vegagerdin.is • Iceland: Road Administration, Ring Road
🔗 vegagerdin.is • Iceland: Road Administration, journey planning and conditions
Should I expect motorway-style conditions throughout Iceland’s Ring Road?
No. Be prepared for features such as single-lane bridges, changing weather and road conditions. Reduce speed before hazards and follow the signs; being on a major route does not remove these risks.
🔗 reglugerd.is • Iceland: Traffic Signs Regulation 250/2024
🔗 vegagerdin.is • Iceland: Road Administration, Ring Road
🔗 vegagerdin.is • Iceland: Road Administration, journey planning and conditions
What should I check before a long highway journey in Iceland?
Check weather, road conditions and closures before setting out and during the journey. The Road and Coastal Administration’s Ring Road information links to official travel-safety information. Choose a route suitable for the conditions and your vehicle.
🔗 reglugerd.is • Iceland: Traffic Signs Regulation 250/2024
🔗 vegagerdin.is • Iceland: Road Administration, Ring Road
🔗 vegagerdin.is • Iceland: Road Administration, journey planning and conditions
3. Speed limit
A speed limit is the maximum legal speed permitted on a road, lane or within a designated area. It may be established by general traffic law or indicated by fixed, variable or temporary traffic signs.
A speed limit is a maximum, not a target speed. Drivers must travel more slowly whenever traffic, visibility, weather, road conditions, vulnerable road users or the condition of the vehicle make the maximum permitted speed unsafe.
Wikimedia.org • ArséniureDeGallium • CC BY-SA
Which general speed limits should car drivers know in Iceland?
The general maxima are 50 km/h in built-up areas, 80 km/h on gravel roads outside them and 90 km/h on paved roads outside them, unless otherwise signed. The Act permits higher signed limits, up to 110 km/h, on roads with separated directions under specified conditions; this does not make that speed the ordinary rural limit. Slow further whenever conditions require it.
Does Iceland use the same rural limit on paved and gravel roads?
No. Outside built-up areas, the general maximum is 90 km/h on paved roads and 80 km/h on gravel roads, unless otherwise signed. Reduce speed before a change to gravel; loose material and reduced grip can require much less than the maximum.
Is Iceland’s Ring Road automatically a high-speed motorway?
No. A route name or number does not create a motorway speed limit. Apply the signed limit and the general rule for the actual paved or gravel road, and drive more slowly for weather, bends and restricted visibility.
4. Bridge
A bridge is a structure that carries a road, path or railway over an obstacle such as a river, valley, railway line or another road. A road bridge may carry one or more roadways together with pedestrian or cycling facilities.
Drivers should follow any speed, weight, height, width or vehicle-access restrictions applying to the bridge. Particular care may be necessary on narrow, exposed or movable bridges and when weather conditions such as wind, rain or ice affect the road surface.
Wikimedia.org • Dickelbers • CC BY-SA
What should I check before crossing a bridge in Iceland?
Check the applicable weight, axle-load, width and height restrictions before committing to the crossing. Include the load, trailer and roof equipment when relevant. A bridge warning and a vehicle restriction serve different purposes; comply with both.
Who goes first on a narrow bridge in Iceland?
Follow any signals or priority signs. If the bridge is too narrow for vehicles to pass safely and no control determines priority, the Act gives priority to the driver who reaches the narrow section first; the later arrival should stop, pull aside or reverse if possible. Slow down, check the other driver’s intentions and avoid entering when the crossing is occupied.
May I stop or park on a bridge in Iceland?
Ordinary stopping and parking on or under a bridge are prohibited unless the place is specifically provided for that purpose. A narrow bridge is not a photo stop. Traffic-required stops and a breakdown are different situations; if a breakdown creates a hazard, warn other traffic and arrange to move the vehicle safely.
5. Give way
A give-way sign requires drivers to allow traffic with priority to proceed before entering, crossing or joining a road. Drivers must reduce speed, observe approaching traffic and stop when necessary.
Unlike a stop sign, a give-way sign does not always require a complete stop. The driver may continue without stopping only when the route is clearly safe and no road user with priority is forced to change speed or direction.
Wikimedia.org • CC0
What does giving way mean in Iceland?
Reduce speed in good time or stop to make clear that you will give way. Proceed only without danger or inconvenience to priority traffic, taking account of its position, distance and speed. At a signed give-way or stop junction, the duty includes vehicles, pedestrians and cyclists on the road you enter or cross.
🔗 reglugerd.is • Regulation 250/2024 articles 10-11, sign 202; Act 77/2019 section 26
Must you always stop when giving way in Iceland?
No. A give-way control requires stopping when necessary to yield or obtain a safe view. A stop sign requires a complete stop even if the road appears empty.
🔗 reglugerd.is • Regulation 250/2024 articles 10-11, sign 202; Act 77/2019 section 26
Give way.
English • Traffic sign 202 • Give way. Drivers must give priority to traffic on the road they are entering or crossing. With plate 802.1 ‘Distance’, warns of give way ahead. With plate 824 ‘Stop ahead’, warns of a compulsory stop ahead.
Íslenska • Umferðarmerki 202 • Biðskylda. Merki þetta gefur til kynna að ökumanni beri að veita umferð á vegi sem ekið er inn á eða yfir forgang. Þar sem merkið stendur með undirmerki 802.1 Fjarlægð er varað við biðskyldu fram undan. Þar sem merkið stendur með undirmerki 824 Stöðvunarskylda fram undan er varað við stöðvunarskyldu fram undan.
Sources
🔗 Commons.wikimedia.org
🔗 Reglugerd.is • Reglugerð nr. 250/2024 • 11. gr.
SVG source: Gigillo83, drawn by original of Umferðastrofa • Public domain • Original revision 2012-12-31. Wikimedia original unmodified.
What should you check before proceeding after giving way in Iceland?
Wait until the manoeuvre is safe. Check the priority traffic, the view in both directions and enough space to complete the entry. Giving way to one vehicle does not remove duties towards another driver, a cyclist or a pedestrian.
🔗 reglugerd.is • Regulation 250/2024 articles 10-11, sign 202; Act 77/2019 section 26
6. Priority road
A priority road is a road whose traffic is given priority over traffic entering from intersecting roads. It is normally identified by a priority-road sign, while an end sign indicates where that continuing priority status stops.
Drivers on a priority road must still obey traffic lights, authorised officers, speed limits, crossings and turning rules. Having priority never allows a driver to proceed when doing so would create danger or block an intersection.
Wikimedia.org • CS • CC0
How does priority-road status work in Iceland?
Iceland uses signed priority-road controls, known as aðalbraut. Read the priority and end indications together with the junction’s other controls; a road being busy does not substitute for those rules.
🔗 reglugerd.is • Regulation 250/2024 articles 10-11,27, signs 206,208,815; Act 77/2019 sections 7,26
How can you tell where a priority road applies in Iceland?
Read the priority-road sign, the corresponding end indication and any supplementary junction diagram. Distinguish a continuing road designation from a sign that regulates only one junction. If a diagram shows the priority route turning, follow that diagram rather than assuming the straight-ahead road has priority.
🔗 reglugerd.is • Regulation 250/2024 articles 10-11,27, signs 206,208,815; Act 77/2019 sections 7,26
Start of a priority road.
English • Traffic sign 206 • Priority road. Traffic on this road has priority over traffic from side roads.
Íslenska • Umferðarmerki 206 • Aðalbraut. Merki þetta gefur til kynna að umferð á vegi hafi forgang gagnvart umferð af hliðarvegum.
Sources
🔗 Commons.wikimedia.org
🔗 Reglugerd.is • Reglugerð nr. 250/2024 • 11. gr.
SVG source: Gigillo83, drawn by original of Umferðastrofa • Public domain • Original revision 2013-01-01. Wikimedia original unmodified.
End of the priority road.
English • Traffic sign 208 • End of priority road. The road no longer has special priority over traffic from side roads.
Íslenska • Umferðarmerki 208 • Aðalbraut endar. Merki þetta gefur til kynna að aðalbraut endi og umferð á vegi hafi ekki lengur sérstakan forgang gagnvart umferð af hliðarvegum.
Sources
🔗 Commons.wikimedia.org
🔗 Reglugerd.is • Reglugerð nr. 250/2024 • 11. gr.
SVG source: Gigillo83, drawn by original of Umferðastrofa • Public domain • Original revision 2013-01-01. Wikimedia original unmodified.
Does having road priority let you ignore other controls in Iceland?
No. Obey the applicable traffic signals and authorised directions, speed limits and crossing rules. Turning or changing lanes can require yielding, and having priority never permits entering a conflict that cannot be crossed safely.
🔗 reglugerd.is • Regulation 250/2024 articles 10-11,27, signs 206,208,815; Act 77/2019 sections 7,26
7. Overtaking
Overtaking is the act of passing another road user travelling in the same direction. It normally involves moving to another position or lane, passing the slower road user and returning to the appropriate position when it is safe.
Before overtaking, a driver should make sure there is sufficient visibility and space, check mirrors and blind spots, signal when required and ensure that no other road user is already overtaking. The manoeuvre must be completed without exceeding the speed limit or endangering other road users.
Wikimedia.org • Hansueli Krapf • CC BY-SA
On which side do drivers normally overtake in Iceland?
As traffic normally keeps right, drivers ordinarily overtake on the left. This is the general rule, not permission to pass wherever a lane is available; exceptions and restrictions depend on the local law.
🔗 reglugerd.is • Iceland: Act18,23-25,36
🔗 althingi.is • Iceland: Road Traffic Act77/2019, edition1October2026
When should you avoid overtaking in Iceland?
Do not begin if approaching traffic, restricted visibility, road markings, an intersection, a crossing or another road user makes the manoeuvre unsafe or unlawful. Check behind and ahead, allow enough space and never exceed the speed limit to complete the pass.
🔗 reglugerd.is • Iceland: Act18,23-25,36
🔗 althingi.is • Iceland: Road Traffic Act77/2019, edition1October2026
What extra care is needed when overtaking slower road users in Iceland?
Leave enough lateral space for the road user you are passing. When overtaking a bicycle or light moped, Icelandic law requires at least 1.5 m. Wait if you cannot provide that clearance and complete the manoeuvre safely.
🔗 reglugerd.is • Iceland: Act18,23-25,36
🔗 althingi.is • Iceland: Road Traffic Act77/2019, edition1October2026
8. Crossing animals
An animals-crossing warning indicates a place or road section where wild animals, livestock or ridden animals may enter or cross the road. Animals may appear suddenly, move unpredictably or be difficult to see in darkness, vegetation or poor weather.
Drivers should reduce speed, scan both sides of the road and remain prepared to stop. The warning sign does not itself give animals priority or impose a numerical speed limit, but drivers must avoid frightening, endangering or colliding with them.
Wikimedia.org • Christoph Strässler • CC BY-SA
Which animals might drivers encounter on roads in Iceland?
Watch for animals on or beside the road. Icelandic warning variants can depict horses, reindeer, birds, cattle, sheep or rabbits. Read the actual animal symbol, slow for the hazard and do not assume that the risk ends immediately after the sign.
🔗 reglugerd.is • Iceland: Regulation sign 146; Act sections 4,33,36
🔗 althingi.is • Iceland: Road Traffic Act 77/2019, edition 1 October 2026
Warning for cattle on the road.
English • Traffic sign 146.4 • Animals. Particular care is needed because of animals on or beside the road. The symbol varies with the animals concerned, for example horses, reindeer, birds, cattle, sheep or rabbits.
Íslenska • Umferðarmerki 146.4 • Dýr. Merki þetta gefur til kynna að nauðsynlegt sé að sýna sérstaka aðgát vegna dýra á eða við veg. Merkið tekur breytingum eftir því hvaða dýrum varað er við. Á merkinu geta því t.d. verið hestar, hreindýr, fuglar, nautgripir, sauðfé eða kanínur.
Sources
🔗 Commons.wikimedia.org
🔗 Reglugerd.is • Reglugerð nr. 250/2024 • 8. gr.
SVG source: Gigillo83, drawn by original of Umferðastrofa • Public domain • Original revision 2013-01-01. Wikimedia original unmodified.
Does an animal-crossing warning sign in Iceland set a new speed limit?
A warning of animals is not, by itself, a numerical speed-limit sign. Continue to obey the applicable speed limit, but slow down whenever animals could enter the road or visibility is poor. A separate regulatory speed sign must also be obeyed.
🔗 reglugerd.is • Iceland: Regulation sign 146; Act sections 4,33,36
🔗 althingi.is • Iceland: Road Traffic Act 77/2019, edition 1 October 2026
What should you do if an animal enters the road in Iceland?
Brake as necessary while keeping control and checking the surrounding traffic. Avoid swerving into opposing traffic or off the road. Give livestock and ridden animals room, avoid unnecessary horn use, and watch for more animals following.
🔗 reglugerd.is • Iceland: Regulation sign 146; Act sections 4,33,36
🔗 althingi.is • Iceland: Road Traffic Act 77/2019, edition 1 October 2026
9. Curve
A curve is a section of road that changes direction to the left or right. A sharp, unexpected or poorly visible curve can reduce a driver’s view of approaching traffic, stopped vehicles, pedestrians and other hazards.
Drivers should reduce speed before entering the curve, remain within their lane and use smooth steering, braking and acceleration. Warning signs may indicate the direction of the first curve or a series of successive curves.
Wikimedia.org • Dickelbers • CC BY-SA
What makes a bend dangerous in Iceland?
A bend can hide traffic and shorten your stopping view. Watch for a tightening curve, changing grip and road users hidden beyond it. Slow before entering and choose a speed that lets you stop within the visible distance.
🔗 reglugerd.is • Iceland: Regulation signs 100,102; Act sections 25,36
🔗 althingi.is • Iceland: Road Traffic Act 77/2019, edition 1 October 2026
How should you approach a sharp curve in Iceland?
Slow down before the bend, select the correct lane position, look through the curve and steer smoothly. Keep enough grip and visible stopping distance for the road and weather conditions.
🔗 reglugerd.is • Iceland: Regulation signs 100,102; Act sections 25,36
🔗 althingi.is • Iceland: Road Traffic Act 77/2019, edition 1 October 2026
Is overtaking safe on a blind bend in Iceland?
Do not overtake when a bend, crest or other obstruction restricts the view, unless you can use a lane in which opposing traffic is prohibited. The Act excludes bicycles and light mopeds travelling at the road edge from this specific prohibition, but the general safety conditions for overtaking still apply.
🔗 reglugerd.is • Iceland: Regulation signs 100,102; Act sections 25,36
🔗 althingi.is • Iceland: Road Traffic Act 77/2019, edition 1 October 2026
10. Traffic lights
Traffic lights use coloured lights, arrows or symbols to regulate when road users may proceed, must prepare to stop or must remain stopped. Separate signals may apply to particular directions, lanes, pedestrians, cyclists or public-transport vehicles.
A green light permits movement only when the route is clear and the movement is otherwise legal. Road users must still follow priority rules, turning restrictions, lane markings and instructions from authorised traffic controllers.
Wikimedia.org • Helgi Halldórsson • CC BY-SA
What must a driver do at red, amber and green signals in Iceland?
Red means stop. Red-and-amber still means stop. Steady amber also requires stopping unless you are too close to stop safely. Green permits movement only in a lawful direction, with due care for other road users. Follow the applicable stop line, directional signals and junction-clearance rules.
🔗 althingi.is • Iceland, Act 77/2019 sections 7, 19, 27; Regulation 250/2024 sections 41-42
May you turn at a red traffic light in Iceland?
A plain red signal does not permit a turn. An applicable separate green arrow controls only the direction it indicates. Do not treat a clear road or another country’s practice as permission to turn on red.
🔗 althingi.is • Iceland, Act 77/2019 sections 7, 19, 27; Regulation 250/2024 sections 41-42
Can a green light remove the need to give way to pedestrians in Iceland?
No. Drivers must allow pedestrians already on a controlled crossing to pass even when the vehicle signal permits movement. Turning drivers must proceed slowly and wait for pedestrians lawfully on, or about to enter, that crossing.
🔗 althingi.is • Iceland, Act 77/2019 sections 7, 19, 27; Regulation 250/2024 sections 41-42
11. Driving licence
A driving licence is an official document authorising a person to drive one or more specified categories of motor vehicle. It may contain conditions, restrictions, category codes and expiry dates that determine which vehicles the holder may drive.
Drivers must hold a licence that is valid for the vehicle category and jurisdiction concerned. A licence may be provisional, full, restricted, suspended or withdrawn, and additional qualifications may be required for professional driving.
Wikimedia.org • CC0
Which driving-licence entitlement is needed for an ordinary car in Iceland?
In Iceland, an ordinary passenger car generally falls under category B, subject to the vehicle and trailer rules. A different entitlement may be needed for motorcycles, heavy vehicles, trailers or passenger transport.
Does an International Driving Permit replace the original licence in Iceland?
No. An International Driving Permit accompanies the underlying valid driving licence; it does not replace it. Carry both when using an IDP, and check which permit or translation is accepted for your licence and visit.
🔗 gov.uk • UK Government, IDPs must accompany valid underlying driving licence
12. Reversing
Reversing means driving a vehicle backwards. It is commonly used when parking, leaving a confined space or repositioning a vehicle where forward movement is not practical.
Before reversing, the driver should check mirrors and blind spots, look carefully around the vehicle and make sure the area behind is clear. Reversing should be performed slowly and only for as long as necessary because visibility behind the vehicle is often limited.
Wikimedia.org • Kārlis Dambrāns • CC BY
When may Icelandic drivers reverse or turn around?
Only without danger or inconvenience to others.
🔗 althingi.is • Act 77/2019, Art 20(1): reversing and turning
13. Licence plate
A licence plate, also called a registration plate or number plate, is a plate displaying a unique registration identifier assigned to a vehicle by the competent registration authority. It allows the vehicle to be identified for purposes such as registration, traffic enforcement, taxation, insurance and parking control.
The appearance, format, placement and number of plates required vary between countries and vehicle categories. Drivers must ensure that required licence plates are correctly fitted, clearly visible and legible and must follow the local rules when a plate is lost, stolen, damaged or replaced.
Wikimedia.org • Ralf_Roletschek • GFDL
What is a licence plate?
A licence plate is a plate displaying the registration identifier assigned to a vehicle. It allows authorities and other authorised systems to identify the vehicle's registration.
Is a licence plate the same as a registration plate?
Yes. Licence plate, registration plate and number plate are different terms commonly used for the plate displaying a vehicle's official registration number.
What should you do if a licence plate is lost or stolen?
Follow the local reporting and replacement procedure. For example, UK guidance says stolen plates should be reported to the police and DVLA, and replacement plates are needed before driving. Check the registration authority’s procedure for a lost plate; it may differ from the theft process.
14. Dangers
A general danger warning sign warns road users of a hazard ahead that is not represented by a more specific warning sign. The particular danger may be explained by a supplementary panel, text, symbol or other indication placed with the warning sign.
Drivers should increase their attention, observe the road ahead and adapt their speed to the nature of the hazard and surrounding conditions. The exact appearance of the sign and the way the danger is identified vary between countries, so road users must follow the local traffic signs and regulations.
Wikimedia.org • Reinhard_Dietrich • CC0
What does a general danger warning sign mean?
A general danger warning sign indicates that there is a hazard ahead that is not represented by a more specific warning sign in the local traffic-sign system.
Warning for a danger with no specific traffic sign.
What should you do when you see a general danger warning sign?
Increase your attention, observe the road and surroundings carefully and adapt your speed where necessary so that you can respond safely to the hazard.
Does the sign impose a specific speed limit?
Not normally. A warning sign alerts road users to danger rather than establishing a numerical speed limit. A separate speed-limit sign may be provided where a specific maximum speed is required.
15. Blind summit
A blind summit is the crest of a hill where the road ahead cannot be seen clearly because the rising road surface blocks the driver's view. Vehicles, cyclists, pedestrians, bends or other hazards may therefore remain hidden until a driver reaches or passes the summit.
Drivers approaching a blind summit should reduce speed, remain in the correct road position and avoid overtaking when they cannot see far enough ahead. They should always be able to react safely to traffic or obstacles appearing beyond the crest.
Wikimedia.org • Dickelbers • CC BY-SA
Should you overtake near a blind summit?
Generally, no when visibility is insufficient. Drivers should avoid entering the path of opposing traffic unless they have a clear view and overtaking is permitted by the applicable traffic rules.
🔗 gov.uk • Great Britain Highway Code, Rules 226–237; national guidance example
16. Bus
A bus is a motor vehicle designed to transport multiple passengers, usually along roads as part of public transport, school transport, private transport or another passenger service. Buses generally have more passenger capacity than cars and may be designed to carry seated passengers, standing passengers or both.
Special rules may apply to buses concerning the driving licence, passenger capacity, speed limits, seat belts, bus lanes, stops and passenger boarding. The legal classification of buses and coaches and the rules applying to them vary between countries, so drivers and passengers must follow the local traffic regulations.
Wikimedia.org • Jonathan Dann • CC BY-SA
What is a bus?
A bus is a motor vehicle designed to transport a relatively large number of passengers. It may be used for public transport, school transport, private services or other passenger transport.
🔗 gov.uk • Great Britain Highway Code, Rules 83–88; national guidance example
🔗 gov.uk • Great Britain Highway Code, Rules 221–223; national guidance example
Do buses always have priority when leaving a bus stop?
No. Some countries require other drivers to give way to buses leaving designated stops, particularly in urban areas, while others apply the normal merging rules.
🔗 gov.uk • Great Britain Highway Code, Rules 83–88; national guidance example
🔗 gov.uk • Great Britain Highway Code, Rules 221–223; national guidance example
Do buses have special speed limits?
They can. Some countries impose lower maximum speeds on buses than on passenger cars, particularly on high-speed roads. Different limits may apply to buses and coaches.
🔗 gov.uk • Great Britain Highway Code, Rules 83–88; national guidance example
🔗 gov.uk • Great Britain Highway Code, Rules 221–223; national guidance example
17. Police
Police are public authorities responsible for enforcing laws, maintaining public safety and managing situations that may affect road traffic. In traffic, police officers may control vehicles, enforce traffic rules, investigate collisions, direct traffic and respond to emergencies.
Road users must follow lawful instructions given by police officers or other authorised traffic-control personnel. Police directions may temporarily override traffic lights, road signs or normal traffic arrangements, depending on local law.
Wikimedia.org • Dickelbers • CC BY-SA
What is the role of police in road traffic?
Police help enforce traffic law, investigate collisions and respond to risks on the road. For example, Greater Manchester Police describe targeted road enforcement, a round-the-clock roads-policing response and specialist serious-collision investigation. Exact responsibilities and powers vary by jurisdiction.
🔗 gmp.police.uk • Greater Manchester Police, Roads Policing Strategy2024–2026
Must you obey a police officer directing traffic?
Yes. Lawful directions given by an authorised police officer must be followed. In many countries, those directions take precedence over traffic lights, road signs and normal priority rules.
What should you do if police signal you to stop?
Slow down, follow the officer's directions and stop at a safe location as instructed. Do not make sudden movements or continue driving unless directed to do so.
18. Ambulance
An ambulance is a vehicle equipped and used to provide emergency medical assistance or transport patients to or between healthcare facilities. Ambulances may carry medical equipment and trained personnel who can provide treatment during transport.
During an emergency response, an ambulance may use warning lights and a siren and may receive special priority or exemptions from certain traffic rules. Other road users must follow the local rules for emergency vehicles, make sufficient space and avoid obstructing their passage.
Wikimedia.org • Eysteinn Guðni Guðnason • CC BY-SA
What is an ambulance?
An ambulance is a specially equipped vehicle used to provide emergency medical assistance and transport sick or injured people.
🔗 gov.uk • Great Britain Highway Code, Rule 219, emergency vehicles; national guidance example
What should you do when an ambulance approaches?
Make space safely for an ambulance on an emergency response, following the local rules and any lawful directions. Slow down or stop where necessary without sudden or dangerous movements. Do not assume that its emergency status allows you to pass a red light or disregard another traffic control.
🔗 gov.uk • Great Britain Highway Code, Rule 219, emergency vehicles; national guidance example
Can an ambulance exceed the speed limit?
Many countries permit emergency vehicles to depart from certain normal speed rules during an urgent mission, subject to safety requirements and national legislation.
🔗 gov.uk • Great Britain Highway Code, Rule 219, emergency vehicles; national guidance example
19. European emission standard
A European emission standard, commonly called a Euro standard, is a European vehicle classification based on limits for pollutants emitted by vehicles and their engines. Successive standards, such as Euro 4, Euro 5 and Euro 6, introduced progressively stricter requirements for pollutants such as nitrogen oxides, particulate matter, carbon monoxide and hydrocarbons.
A vehicle's Euro standard is determined as part of its type approval and depends on factors including the vehicle category, fuel type and applicable emissions legislation when it was approved. Euro standards may also be used by authorities to determine access to low-emission zones, but local access rules vary between countries and cities.
Wikimedia.org • Rfeba • CC0
What is a European emission standard?
A European emission standard, or Euro standard, classifies vehicles according to the emissions requirements they had to satisfy when approved for use in the European market.
🔗 consilium.europa.eu • Council of the EU, Euro 7 adoption explanation, 12 April 2024
What do Euro 4, Euro 5 and Euro 6 mean?
Euro 4, Euro 5 and Euro 6 identify successive stages of European vehicle-pollutant requirements. The applicable limits depend on the vehicle, engine and pollutant, so a higher number does not mean that every individual numerical limit changed. Later stages can also alter testing and durability requirements.
🔗 consilium.europa.eu • Council of the EU, Euro 7 adoption explanation, 12 April 2024
Can petrol and diesel vehicles with the same Euro number have different emission limits?
Yes. The applicable emission limits and testing requirements can differ according to the vehicle category, engine and fuel type even when vehicles belong to the same general Euro generation.
🔗 consilium.europa.eu • Council of the EU, Euro 7 adoption explanation, 12 April 2024
20. Pothole
A pothole is a hole or depression in the road surface caused by wear, weather, water, repeated traffic loads or deterioration of the pavement. Potholes can vary greatly in size and depth and may develop gradually or become worse after freezing, heavy rain or repeated vehicle traffic.
Potholes can affect steering, braking and vehicle stability and may damage tyres, wheels or suspension components. Drivers and riders should observe the road ahead, adapt their speed and avoid sudden or dangerous manoeuvres when encountering damaged road surfaces.
Wikimedia.org • State Farm • CC BY
What is a pothole?
A pothole is a hole or depression that develops in a road surface when the pavement becomes damaged or deteriorates.
What should you do when you see a pothole?
Reduce speed when necessary, maintain control of the vehicle and avoid abrupt steering or braking. Only move around the pothole when this can be done safely without endangering other road users.
🔗 gov.uk • Great Britain Highway Code, Rules 226–237; national guidance example
Are potholes dangerous for cyclists?
Yes. Bicycle wheels can be strongly affected by deep holes or sharp edges, particularly when the cyclist has little time or space to avoid the hazard.
🔗 gov.uk • Great Britain Highway Code, Rules 226–237; national guidance example
21. Path
A path is a relatively narrow route intended for pedestrians and, where permitted, other road users or small vehicles. Paths may run through urban areas, countryside, parks, forests or between other roads and can be surfaced or unsurfaced.
A path is not necessarily the same as a footpath or cycle path. The road users permitted to use it depend on its legal status, width, traffic signs and local regulations.
Wikimedia.org • Tangopaso • CC0
Is a path the same as a footpath?
Not necessarily. A footpath is specifically intended for pedestrians, while a path may also permit cyclists or other users according to local rules.
Can cyclists use a path?
This depends on the legal status, width and signs applying to the path. Some paths permit cyclists, while others are reserved for pedestrians or particular users.
Can motor vehicles use a path?
This depends on local law. Some paths prohibit motor vehicles entirely, while narrow vehicles may be permitted on other paths unless traffic signs restrict access.
Who has priority when a path joins a larger road?
The applicable local priority rules determine who must give way. Special rules often apply when a minor path joins an ordinary road.
22. Particulates
Particulates, or particulate matter (PM), are tiny solid particles or liquid droplets suspended in the air. In road traffic, particulate emissions can come from vehicle exhaust, brake wear, tyre wear and road-surface wear, as well as dust that is disturbed by passing traffic.
Particulate matter is commonly classified by particle size. PM10 refers to particles with a diameter of up to approximately 10 micrometres, while PM2.5 refers to finer particles of up to approximately 2.5 micrometres. Vehicle emission standards, particulate filters and air-quality measures are used to reduce exposure to these pollutants.
Wikimedia.org • wili hybrid • CC BY
What are particulates?
Particulates, or particulate matter, are very small solid particles or liquid droplets suspended in the air.
🔗 epa.gov • US EPA, Particulate Matter Basics
🔗 fhwa.dot.gov • US FHWA, particulate matter and road-transport sources
🔗 epa.gov • US EPA, AP-42 section 13.2.1.1, paved-road emissions and dust resuspension
What are PM10 and PM2.5?
PM10 refers to particles with a diameter of up to approximately 10 micrometres. PM2.5 refers to finer particles with a diameter of up to approximately 2.5 micrometres.
🔗 epa.gov • US EPA, Particulate Matter Basics
🔗 fhwa.dot.gov • US FHWA, particulate matter and road-transport sources
🔗 epa.gov • US EPA, AP-42 section 13.2.1.1, paved-road emissions and dust resuspension
Where do traffic particulates come from?
Road traffic can produce particles through engine exhaust, brake wear, tyre wear and road-surface wear. Passing traffic can also resuspend dust already present on the road.
🔗 epa.gov • US EPA, Particulate Matter Basics
🔗 fhwa.dot.gov • US FHWA, particulate matter and road-transport sources
🔗 epa.gov • US EPA, AP-42 section 13.2.1.1, paved-road emissions and dust resuspension
23. Air pollution
Air pollution is the presence of gases, particles or other substances in the air at concentrations that can harm human health, the environment or ecosystems. Road traffic contributes to air pollution through exhaust emissions and through non-exhaust sources such as brake wear, tyre wear and road dust.
Important traffic-related pollutants include nitrogen oxides, particulate matter, carbon monoxide and volatile organic compounds. Some pollutants are emitted directly by vehicles, while others can form in the atmosphere through chemical reactions. Vehicle-emission standards, cleaner technologies and traffic-management measures are used to reduce these emissions.
Wikimedia.org • Emmanuelkwizera • CC BY-SA
What is air pollution?
Air pollution is the presence of harmful gases, particles or other contaminants in the air. Road transport can contribute through engine emissions, vehicle wear and dust; the sources and pollutants differ by vehicle and conditions.
🔗 epa.gov • US EPA, smog and vehicle emissions
🔗 epa.gov • US EPA, Particulate Matter Basics
🔗 fhwa.dot.gov • US FHWA, particulate matter and road-transport sources
🔗 epa.gov • US EPA, AP-42 section 13.2.1.1, paved-road emissions and dust resuspension
How does road traffic cause air pollution?
Vehicles with combustion engines can emit exhaust pollutants. Road traffic also produces particles through brake, tyre and road-surface wear and can stir up road dust. Vehicles without tailpipe emissions can still contribute to these non-exhaust sources.
🔗 epa.gov • US EPA, smog and vehicle emissions
🔗 epa.gov • US EPA, Particulate Matter Basics
🔗 fhwa.dot.gov • US FHWA, particulate matter and road-transport sources
🔗 epa.gov • US EPA, AP-42 section 13.2.1.1, paved-road emissions and dust resuspension
Which air pollutants are associated with road traffic?
Important traffic-related pollutants include nitrogen oxides, particulate matter, carbon monoxide and volatile organic compounds. Their relative importance depends on the vehicle, fuel and driving conditions.
🔗 epa.gov • US EPA, smog and vehicle emissions
🔗 epa.gov • US EPA, Particulate Matter Basics
🔗 fhwa.dot.gov • US FHWA, particulate matter and road-transport sources
🔗 epa.gov • US EPA, AP-42 section 13.2.1.1, paved-road emissions and dust resuspension
24. Rush hour
Rush hour is a period when roads and public transport networks experience particularly high demand, commonly because large numbers of people are travelling to or from work, school or other regular destinations. It usually occurs during the morning and late afternoon or evening on working days.
Rush-hour traffic can result in congestion, slower speeds, longer journeys and frequent stopping. Drivers should maintain a safe following distance, remain patient, anticipate changing traffic conditions and follow any temporary or dynamic traffic-management measures.
Wikimedia.org • MDRX • CC BY-SA
What is rush hour?
Rush hour is a period when unusually large numbers of people travel at the same time, resulting in increased traffic and often congestion.
🔗 gov.uk • Great Britain Highway Code, Rules 126 and 133–134; national guidance example
🔗 gov.uk • Great Britain Highway Code, Rules 174 and 192; national guidance example
Should you increase your following distance in rush-hour traffic?
Yes. Leave sufficient distance to react to sudden braking and frequent changes in traffic speed. Avoid following another vehicle too closely even when traffic is moving slowly.
🔗 gov.uk • Great Britain Highway Code, Rules 126 and 133–134; national guidance example
🔗 gov.uk • Great Britain Highway Code, Rules 174 and 192; national guidance example
Can speed limits change during rush hour?
Yes. Roads equipped with variable traffic management may display lower speed limits during congestion. Drivers must follow the speed limit currently indicated.
🔗 gov.uk • Great Britain Highway Code, Rules 126 and 133–134; national guidance example
🔗 gov.uk • Great Britain Highway Code, Rules 174 and 192; national guidance example
25. Road code
A road code is a collection of laws and traffic rules that regulate how people use public roads. It establishes rules for drivers, cyclists, pedestrians and other road users and covers subjects such as priority, speed, overtaking, parking, traffic lights, road signs and road markings.
Road codes differ between countries and sometimes between regions. Every road user is expected to know and follow the rules that apply where they are travelling, even when those rules differ from those in their home country.
Are road codes the same in every country?
No. Although many traffic rules and signs are similar internationally, each country establishes its own traffic legislation and may apply different rules, signs, speed limits and requirements.

Traffic rules
Iceland