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QuizTraffic rulesBosnia and Herzegovina

This interesting quiz helps you test your knowledge in a clear and visual way. With easy multiple-choice questions, you can quickly build confidence and learn new facts while keeping it simple, interactive, and fun.

Traffic signs
Traffic rules
Bosnia and Herzegovina
True/false 17 Bosnia and Herzegovina 26 Car controls 109 Dashboard lights 40 Priority rules 9 Pedestrians 19 Cyclists 20 Show all 593
How should you approach a sharp bend on a mountain road?

401. How should you approach a sharp bend on a mountain road?

Move toward the centre of the road for a better view.
Overtake just before entering the bend.
Brake hard while turning through the bend.
✓ Reduce speed before the bend and remain in your lane.

Mountain bends may hide oncoming vehicles, cyclists, animals, or debris. Slow down before entering and keep a safe road position.

Sharp bend on a mountain road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What can selecting a lower gear provide in a manual vehicle?

402. What can selecting a lower gear provide in a manual vehicle?

A shorter steering ratio.
✓ Greater engine braking.
Automatic parking-brake operation.
Higher tyre pressure.

Selecting a suitable lower gear can increase engine braking, helping the vehicle slow or control its speed without relying entirely on the brakes.

Manual gear selection for engine braking
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

403. What does this dashboard symbol indicate?

✓ Dipped headlights.
Front fog lights.
Main beam.
Sidelights.

This symbol indicates that the dipped headlights are switched on. Dipped headlights illuminate the road ahead while limiting glare for other road users.

Dipped-headlight symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if your vehicle begins to drift onto the shoulder?

404. What should you do if your vehicle begins to drift onto the shoulder?

Steer back onto the road as quickly as possible.
Keep driving on the shoulder until the road becomes wider.
✓ Ease off the accelerator and steer back smoothly when safe.
Brake firmly before returning to the road.

If you drift onto the shoulder, avoid sudden steering or braking. Slow gently and return to the road smoothly when it is safe.

Vehicle drifting towards the road shoulder
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What is the main purpose of a motorway emergency lane or hard shoulder?

405. What is the main purpose of a motorway emergency lane or hard shoulder?

For driving when the motorway is busy.
✓ For emergencies and breakdowns.
For allowing faster vehicles to pass.
For overtaking slow-moving traffic.

A motorway emergency lane or hard shoulder is primarily intended for emergencies and breakdowns, not normal driving. In some places it may be opened temporarily as a traffic lane when signs or signals specifically permit this.

Motorway hard shoulder beside the traffic lanes
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Which selector position is used for normal forward driving?

406. Which selector position is used for normal forward driving?

N (Neutral).
P (Park).
R (Reverse).
✓ D (Drive).

Select D (Drive) for normal forward driving in a vehicle with an automatic transmission. The transmission then selects the appropriate gear automatically.

Automatic gear selector with P, R, N and D positions
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid resting your hand on the gear lever while driving?

407. Why should you avoid resting your hand on the gear lever while driving?

It can disengage the clutch.
It can apply the parking brake.
It can increase engine speed.
✓ It can cause unnecessary wear in the gear-selection mechanism.

Resting your hand on the gear lever can place unnecessary pressure on parts of the gear-selection mechanism and contribute to wear. Keep both hands on the steering wheel when you are not changing gear.

Driver's hand resting on a manual gear lever
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Where should passengers get in or out of a vehicle when possible?

408. Where should passengers get in or out of a vehicle when possible?

Through whichever door opens first.
✓ On the side away from moving traffic.
From the rear door nearest the centre of the road.
On the side closest to approaching traffic.

Passengers should get in or out on the side away from moving traffic whenever possible. This is particularly important for children, who may not recognise approaching traffic or other road users. Before opening any door, check that it is safe.

Passenger leaving a vehicle on the side away from traffic
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
When should a passenger get on or off a motorcycle?

409. When should a passenger get on or off a motorcycle?

While the motorcycle is moving slowly.
✓ When the motorcycle is stationary and the rider is ready.
Before the rider has balanced the motorcycle.
As soon as the engine has been started.

A passenger getting on or off can shift the motorcycle's balance suddenly. The motorcycle should be stationary and stable, and the passenger should wait until the rider is ready and prepared to support the extra movement.

Passenger getting onto a stationary motorcycle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if a red warning light appears with an unusual noise?

410. What should you do if a red warning light appears with an unusual noise?

Stop only if another warning light appears.
Ignore the noise if the warning light later goes out.
Wait until the next service to have it checked.
✓ Stop safely, switch off the engine, and seek assistance.

A red warning combined with an unusual noise may indicate a serious fault. Continuing could cause damage or loss of control.

Red dashboard warning requiring the driver's attention
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid selecting N while driving downhill in an automatic vehicle?

411. Why should you avoid selecting N while driving downhill in an automatic vehicle?

It automatically selects a lower gear.
It increases engine braking.
It applies the parking brake.
✓ It reduces engine braking and vehicle control.

Selecting N (Neutral) while driving downhill disconnects the engine from the driven wheels, reducing engine braking. Keep an appropriate drive or gear selected so you can maintain better control of the vehicle.

Neutral selection and downhill coasting in an automatic vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before crossing the road?

412. What should you do before crossing the road?

Look only where traffic normally comes from.
✓ Look for traffic in all directions.
Cross if the nearest vehicle is slowing down.
Listen for vehicles instead of looking.

Always check for approaching traffic from every direction before crossing.

Pedestrian checking for traffic before crossing
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control symbol indicate?

413. What does this vehicle-control symbol indicate?

✓ Rear window wiper.
Rear window demister.
Front windscreen demister.
Windscreen wiper.

This symbol controls the rear window wiper. Depending on the vehicle, the same control may also operate the rear-window washer.

Rear-window wiper control and symbol
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before joining a motorway?

414. What should you do before joining a motorway?

Wait until the end of the slip road before checking for a gap.
Move onto the motorway as soon as the lane markings allow.
Signal and expect motorway traffic to make space for you.
✓ Check your mirrors and blind spot, signal, and look for a safe gap.

Observe motorway traffic early, signal clearly, and merge only when there is a safe gap.

Driver checking motorway traffic before merging
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if the windscreen wipers leave the glass smeared?

415. What should you do if the windscreen wipers leave the glass smeared?

✓ Clean the windscreen and blades, and replace worn blades.
Apply lubricant to the wiper blades.
Use the wipers at a higher speed.
Replace the washer pump instead of the blades.

Worn or dirty wiper blades can seriously reduce visibility in rain. Clean them first and replace them if they remain ineffective or damaged.

Wiper streaks on a vehicle's windscreen
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should cyclists do when an emergency vehicle with lights and siren approaches?

416. What should cyclists do when an emergency vehicle with lights and siren approaches?

Keep riding normally and let the driver find a way past.
Move aside quickly without checking around you.
✓ Stay alert and move to a safe position without obstructing it.
Stop immediately, even if you are in the traffic lane.

Emergency vehicles need a clear route. Move predictably and stop only where doing so is safe.

Cyclist near an approaching emergency vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you keep a safe following distance?

417. Why should you keep a safe following distance?

To make overtaking easier.
✓ To have enough time to stop.
To reduce wear on the brakes.
To make your vehicle easier to see ahead.

A safe following distance gives you enough time to react if the vehicle in front slows down or stops suddenly.

Gap between a vehicle and the traffic ahead
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you be careful when taking more than one medicine before driving?

418. Why should you be careful when taking more than one medicine before driving?

✓ Their combined effects may impair your ability to drive.
They may interfere with the vehicle's electronics.
They usually make road signs harder to see.
They may make the vehicle use more fuel.

Different medicines can interact or have combined side effects such as drowsiness, dizziness, blurred vision, or slower reactions. Check the instructions and seek advice from a doctor or pharmacist if you are unsure whether it is safe to drive.

Multiple medicines and their potential effects on driving
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if it is unsafe to leave a stranded vehicle?

419. What should you do if it is unsafe to leave a stranded vehicle?

Switch off all lights to preserve the battery.
✓ Stay inside, use hazard lights, and call the emergency services.
Walk along the road to find assistance.
Leave the vehicle and wait beside it for help.

If leaving the vehicle would put you in greater danger, remain restrained, make the vehicle visible, contact the emergency services, and follow their instructions.

Vehicle stranded among moving traffic
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do around a damaged electric or hybrid vehicle?

420. What should you do around a damaged electric or hybrid vehicle?

✓ Keep clear of damaged high-voltage components and call trained assistance.
Disconnect exposed electrical components yourself.
Inspect damaged cables closely before calling for help.
Move damaged high-voltage parts away from the road.

Electric and hybrid vehicles can contain dangerous high-voltage systems. Do not touch damaged cables, batteries, or electrical components.

Damaged electric vehicle and high-voltage safety risks
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if exhaust fumes begin entering the car?

421. What should you do if exhaust fumes begin entering the car?

Open the windows and continue to your destination.
Turn up the heater to clear the fumes.
✓ Open the windows, stop safely, leave the vehicle, and seek assistance.
Switch the ventilation to recirculation and keep driving.

Exhaust gases may contain carbon monoxide, which is poisonous and may not be visible. The exhaust system should be inspected before the vehicle is used again.

Vehicle exhaust fumes and cabin ventilation
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if there is no pavement?

422. What should you do if there is no pavement?

Always walk in the same direction as traffic.
Choose the side with the smoothest road surface.
Pay attention only to traffic approaching from behind.
✓ Walk where you can be seen and stay alert.

If there is no pavement, stay as far from traffic as possible and remain alert. The exact side of the road depends on local traffic rules.

Pedestrian walking beside a road without a pavement
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if an emergency vehicle approaches with lights or siren on?

423. What should you do if an emergency vehicle approaches with lights or siren on?

Speed up so the vehicle can follow you.
✓ Stay calm and make room safely.
Stop immediately wherever you are.
Move aside without checking surrounding traffic.

When an emergency vehicle uses lights or siren, check your surroundings and make room safely without sudden or dangerous movements.

Emergency vehicle approaching with warning lights flashing
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How can you check which fuel is suitable for your vehicle?

424. How can you check which fuel is suitable for your vehicle?

✓ Check the fuel-filler label, fuel cap, or vehicle information.
Choose whichever fuel is cheapest at the station.
Ask another driver with a similar-looking vehicle.
Choose the fuel that has the same colour nozzle as last time.

Before refuelling, check which fuel type the vehicle requires. The correct fuel is often shown inside the fuel-filler flap, on or near the fuel cap, or in the vehicle information or owner's manual. Do not rely only on nozzle colours, as these can vary between filling stations and countries.

Checking the fuel label before refuelling
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Which signs may indicate that you are becoming too tired to drive safely?

425. Which signs may indicate that you are becoming too tired to drive safely?

Feeling hungry and slightly thirsty.
Feeling comfortable and relaxed.
✓ Yawning, heavy eyelids, and difficulty concentrating.
Listening to quieter music.

Warning signs of driver fatigue can include repeated yawning, heavy eyelids, difficulty concentrating, wandering thoughts, and trouble maintaining a steady road position. These signs mean you should stop and rest before continuing.

Driver showing signs of fatigue
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if traffic suddenly slows on a motorway?

426. What should you do if traffic suddenly slows on a motorway?

Change lanes immediately to avoid slowing down.
Move onto the shoulder and continue driving.
Maintain speed until the vehicle ahead brakes.
✓ Slow down smoothly and warn traffic behind if needed.

When traffic slows suddenly, reduce speed smoothly, keep a safe distance, and use hazard lights if needed to warn following traffic.

Motorway traffic slowing ahead
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before overtaking another vehicle?

427. What should you do before overtaking another vehicle?

✓ Make sure it is safe and allowed.
Overtake whenever the vehicle ahead is moving slowly.
Signal and expect other traffic to make room.
Move out first and check whether the road is clear.

Before overtaking, check the road, mirrors, blind spots, signs, and markings, use your indicator, and only overtake when it is safe and permitted.

Vehicle preparing to overtake another vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid driving through deep water?

428. Why should you avoid driving through deep water?

Deep water makes the engine use too much oil.
✓ It can damage your vehicle or make you lose control.
Driving through deep water is always prohibited.
Increase speed to maintain full control through the water.

Deep water can damage the engine, reduce braking ability, hide hazards, or cause the vehicle to lose grip. Reduce speed, assess the depth and conditions carefully, and avoid entering the water if you are unsure it is safe. If necessary, stop and use another route.

Deep water covering part of a road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if your lane is blocked by an obstacle?

429. What should you do if your lane is blocked by an obstacle?

✓ Slow down, check carefully, and give way if needed.
Move around it because the obstacle gives you priority.
Follow another vehicle around it without checking yourself.
Signal and expect oncoming traffic to make room.

If your lane is blocked, reduce speed, check mirrors and oncoming traffic, and only move around the obstacle when it is safe.

Obstacle blocking a vehicle's lane
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How can strong crosswinds affect a vehicle towing a trailer?

430. How can strong crosswinds affect a vehicle towing a trailer?

They affect only the towing vehicle, not the trailer.
They improve tyre grip on exposed roads.
They matter only when the trailer is empty.
✓ They can push the trailer sideways and reduce stability.

Trailers have large side surfaces and may be affected strongly by wind, especially on bridges and exposed roads.

Vehicle and trailer exposed to crosswinds
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if the brake pedal feels unusually soft?

431. What should you do if the brake pedal feels unusually soft?

Continue until the brakes begin making noise.
Use only the parking brake while driving.
Reduce the tyre pressure to improve braking.
✓ Stop safely and have the braking system inspected.

A soft brake pedal or increased stopping distance may indicate a serious brake fault. Do not continue driving normally until the system has been checked.

Brake-pedal check for a possible braking fault
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Rain can reduce tyre grip and increase stopping distance.

432. Rain can reduce tyre grip and increase stopping distance.

✓ True.
False.

Wet roads reduce traction, so your vehicle may need more distance to stop safely.

Vehicle travelling on a wet road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What is the safest choice if you have consumed alcohol?

433. What is the safest choice if you have consumed alcohol?

Drink coffee before driving.
✓ Do not drive and arrange a sober form of transport.
Drive only if you do not feel drunk.
Drive slowly and avoid busy roads.

Alcohol can impair judgement, coordination, vision, and reaction time. A sober driver, taxi, public transport, or an overnight stay is the safer choice.

Alcohol consumption and the decision not to drive
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you slow down near schools or playgrounds?

434. Why should you slow down near schools or playgrounds?

School zones are closed to normal traffic.
Vehicles must stop whenever children are nearby.
Children are easier to see when you drive slowly.
✓ Children may behave unpredictably.

Children may suddenly cross the road or move unexpectedly, so drivers should slow down and stay alert near schools and playgrounds.

Vehicle approaching a school or playground area
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should a child use a suitable child restraint?

435. Why should a child use a suitable child restraint?

To make it easier for the child to sleep.
To make the seat belt more comfortable.
✓ To reduce the risk of serious injury in a collision.
To prevent the vehicle from braking suddenly.

A suitable child restraint is designed to protect a child according to their size and development. It helps position and restrain the child correctly, reducing the risk of serious injury in a collision or sudden stop.

Child secured in a suitable car seat
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before a long journey to reduce the risk of driver fatigue?

436. What should you do before a long journey to reduce the risk of driver fatigue?

Drink several energy drinks before leaving.
Keep the cabin as warm as possible.
✓ Get enough sleep before starting the journey.
Avoid taking any breaks until you feel tired.

Getting enough sleep before a long journey helps reduce the risk of driver fatigue. Plan breaks in advance and avoid starting a long drive when you are already tired.

Rest and preparation before a long drive
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should you pass a large vehicle in strong winds?

437. How should you pass a large vehicle in strong winds?

✓ Be prepared for sudden wind changes when passing.
Accelerate sharply as soon as you start passing.
Stay close beside it to remain sheltered from the wind.
Use the horn before moving alongside the vehicle.

Large vehicles can block wind and then expose you to strong gusts when you pass them.

Vehicle passing a large vehicle in windy conditions
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do with a helmet that has taken a significant impact in a collision?

438. What should you do with a helmet that has taken a significant impact in a collision?

Keep using it if the visor or straps still work.
Use it again after tightening the straps.
Replace only the outer shell if it is scratched.
✓ Stop using it and follow the manufacturer's replacement guidance.

A helmet can be damaged internally by a significant impact even when no damage is visible from the outside. Stop using the helmet and follow the manufacturer's guidance, which will commonly require replacement after a significant impact.

Helmet inspection after a significant impact
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if an EV charging cable or connector is damaged?

439. What should you do if an EV charging cable or connector is damaged?

Cover the damaged area and continue charging.
Hold the damaged section away from the vehicle.
Reduce the charging power and continue using it.
✓ Do not use it, and report or arrange repair of the damage.

Do not use a damaged charging cable or connector. Damage can create a risk of electric shock, overheating, or fire. Use suitable undamaged charging equipment and report the fault or arrange professional repair or replacement.

Damaged electric-vehicle charging cable or connector
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should cyclists cross railway or tram tracks?

440. How should cyclists cross railway or tram tracks?

✓ Cross at a safe angle, as close to perpendicular as possible.
Brake firmly while the front wheel is on the rail.
Increase speed so the wheels cannot get caught.
Follow the rails briefly before crossing them.

A bicycle wheel can become trapped in a rail groove. Crossing at a wider angle reduces this risk.

Cyclist crossing rails in the road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Should the legal alcohol limit be treated as a safe target?

441. Should the legal alcohol limit be treated as a safe target?

Yes, because impairment begins only above the limit.
✓ No, impairment can begin before the legal limit is reached.
Yes, if you feel completely sober.
Yes, when driving only a short distance.

A legal limit is an enforcement threshold, not a recommended drinking level. Even a small amount of alcohol can affect driving performance.

Alcohol consumption and the limits of safe driving
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if your motorcycle helmet visor starts to fog?

442. What should you do if your motorcycle helmet visor starts to fog?

Close all helmet vents completely.
Wipe the inside of the visor while riding.
Look around the side of the visor instead.
✓ Reduce speed and clear the visor safely.

A fogged visor can seriously reduce your view of the road. Reduce speed and use the helmet's ventilation, demisting or anti-fog features where available. If you cannot restore a clear view safely, stop in a safe place before continuing.

Misted visor on a motorcycle helmet
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before overtaking a slow-moving vehicle?

443. What should you do before overtaking a slow-moving vehicle?

Use your horn to make the driver move aside.
Follow another vehicle that starts overtaking ahead of you.
Signal first and then check whether there is enough space.
✓ Check that the road ahead is clear and that overtaking is safe.

Before overtaking, make sure you have enough visibility, space, and time. Signal clearly before moving out, do not exceed the speed limit, and never overtake if the road ahead is not clear.

Vehicle preparing to pass slow-moving traffic
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if the vehicle consistently pulls to one side?

444. What should you do if the vehicle consistently pulls to one side?

Reduce pressure in the tyre on the opposite side.
✓ Check the tyre pressures and have the steering, alignment, and brakes inspected.
Keep driving and correct the steering as needed.
Ignore it if the tyres appear normal.

Persistent pulling can be caused by incorrect tyre pressure, wheel misalignment, suspension wear, or a braking fault. It should not be ignored.

Vehicle pulling to one side while travelling
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why can fog make it difficult to judge the speed of other vehicles?

445. Why can fog make it difficult to judge the speed of other vehicles?

Fog causes vehicles to travel at uneven speeds.
✓ Limited visibility makes distances and movement harder to estimate.
Fog changes the way mirrors show moving vehicles.
Fog makes vehicles appear larger than they are.

Fog reduces visual information, making it harder to judge how far away another vehicle is and how quickly it is approaching.

Other traffic partly obscured by fog
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before making a turn?

446. What should you do before making a turn?

Check only the traffic directly ahead.
✓ Check mirrors, signal, and make sure it is safe.
Turn as soon as the road ahead appears clear.
Rely on other road users to slow down for you.

Before turning, check your mirrors, use your indicator, and make sure the turn can be made safely.

Driver preparing to turn at a junction
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if traffic ahead is blocking a junction?

447. What should you do if traffic ahead is blocking a junction?

Follow the vehicle ahead into the junction.
Use the horn so traffic ahead moves forward.
Enter if the traffic light is green.
✓ Wait until there is enough space to clear the junction.

Do not enter a junction if traffic ahead prevents you from clearing it safely. Waiting before the junction helps avoid blocking crossing traffic, pedestrians, cyclists, or other road users.

Queue of traffic blocking a junction
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

448. What does this dashboard symbol indicate?

Power-steering warning.
Engine-management warning.
✓ Cruise control.
Speed limiter.

This symbol indicates the cruise-control system. Cruise control can maintain a selected vehicle speed without the driver continuously pressing the accelerator. The exact indicator behaviour can vary between vehicles.

Cruise-control indicator symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid sudden braking when it is not necessary?

449. Why should you avoid sudden braking when it is not necessary?

It makes the brakes less effective afterwards.
It makes the steering less responsive afterwards.
✓ Vehicles behind may not have time to react.
It causes the tyres to lose pressure.

Sudden braking can surprise drivers behind you and increase the risk of a rear-end collision.

Following traffic and the risk of sudden braking
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What colour is a stop sign usually?

450. What colour is a stop sign usually?

Blue.
White.
✓ Red.
Green.

Stop signs are almost always red because red is universally associated with danger and the need to stop immediately.

Red octagonal stop sign
AI-generated by Traffic-rules.com • WCIT • CC BY-SA