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QuizTraffic rulesUnited States

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
United States
True/false 17 United States 14 Car controls 109 Dashboard lights 40 Priority rules 9 Pedestrians 19 Cyclists 20 Show all 581
Why is it important to make yourself visible at night?

1. Why is it important to make yourself visible at night?

✓ To make drivers see you more easily.
To avoid checking for approaching vehicles.
To ensure drivers can always stop in time.
To make drivers give way wherever you cross.

Bright or reflective clothing helps drivers notice pedestrians in low-light conditions.

Pedestrian visibility beside a road at night
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you check before starting a long journey?

2. What should you check before starting a long journey?

Only the tyres and fuel level.
Only the lights if you plan to drive at night.
✓ Tyres, lights, fluids, windows, mirrors, and essential equipment.
Only the dashboard warning lights.

A brief vehicle check can reveal tyre damage, low fluid levels, faulty lights, or visibility problems before they cause danger. Also confirm that any spare wheel or tyre-repair equipment is available and usable.

Vehicle safety checks before a long journey
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if the service brakes fail while driving?

3. What should you do if the service brakes fail while driving?

Shift into neutral and let the vehicle coast to a stop.
✓ Reduce speed using other available braking methods and stop safely.
Continue slowly until the brakes begin working again.
Switch off the engine immediately while moving.

Remain calm, warn other road users, and use other available braking methods to reduce speed. This may include engine braking or a lower gear, and careful use of the parking or emergency brake according to the vehicle's design. Steer toward the safest available stopping area.

Vehicle braking-system failure while driving
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What makes up the total stopping distance of a vehicle?

4. What makes up the total stopping distance of a vehicle?

Reaction distance and following distance.
Tyre distance and braking distance.
Visibility distance and reaction distance.
✓ Reaction distance and braking distance.

The total stopping distance consists of the distance travelled while the driver reacts to a hazard plus the distance travelled while the vehicle is braking to a stop.

Reaction and braking distances before a vehicle stops
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you be careful when taking more than one medicine before driving?

5. 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
How should cyclists cross railway or tram tracks?

6. How should cyclists cross railway or tram tracks?

Keep the wheels parallel with the rails while crossing.
Follow the rails briefly before crossing them.
✓ Cross at a safe angle, as close to perpendicular as possible.
Increase speed so the wheels cannot get caught.

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
What does this vehicle-control symbol indicate?

7. What does this vehicle-control symbol indicate?

Windscreen wiper.
✓ Rear window wiper.
Rear window demister.
Windscreen washer.

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
How should a cyclist react to a pothole?

8. How should a cyclist react to a pothole?

Keep your speed and pass as close as possible.
✓ Check surroundings, reduce speed, and avoid it smoothly.
Focus only on the pothole and not the traffic around you.
Swerve around it as soon as you notice it.

Sudden swerving can place you in the path of traffic. Check your surroundings and change direction gradually.

Cyclist approaching a pothole
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Which factors can increase a vehicle's stopping distance?

9. Which factors can increase a vehicle's stopping distance?

Using dipped headlights and keeping the windows closed.
Lower speed, dry roads, and good tyres.
✓ Higher speed, slower reactions, poor grip, and vehicle condition.
Having a full fuel tank and adjusted mirrors.

Stopping distance can increase because of higher speed, slower driver reactions, reduced tyre grip, poor weather or road conditions, worn tyres, weak brakes, or a heavier vehicle. Both the driver's reaction distance and the vehicle's braking distance can be affected.

Road and vehicle conditions affecting stopping distance
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How can the parking brake help when moving off uphill?

10. How can the parking brake help when moving off uphill?

It selects a lower gear automatically.
It releases the clutch.
✓ It can prevent the vehicle from rolling backwards.
It increases engine power.

When moving off uphill, the parking brake can hold the vehicle stationary while you prepare to move. Release it smoothly once the clutch reaches the biting point and sufficient power is applied.

Parking-brake control during an uphill start
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control symbol indicate?

11. What does this vehicle-control symbol indicate?

Rear window demister.
Windscreen washer.
✓ Windscreen wiper speed.
Automatic headlights.

This symbol relates to the windscreen wipers. The control allows the driver to select an appropriate wiping mode or speed for the amount of rain and visibility conditions.

Windscreen-wiper control for adjusting wiping speed
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if you smell fuel or see fuel leaking from your vehicle?

12. What should you do if you smell fuel or see fuel leaking from your vehicle?

Restart the engine to check whether the leak continues.
Ignore a small leak if the fuel level remains stable.
✓ Stop, switch off the engine, avoid flames or sparks, and call for assistance.
Drive slowly to the nearest fuel station.

Leaking fuel creates a serious fire risk. Keep people away, do not restart the engine, and arrange professional assistance.

Fuel leaking from a vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

13. What does this dashboard symbol indicate?

Power-steering warning.
Electronic stability control.
✓ Low tyre pressure.
Brake-system warning.

This symbol indicates that one or more tyres may have low pressure. Check the tyre pressures and inspect the tyres for damage or a puncture.

Tyre-pressure warning symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you expect when leaving a sheltered area during strong winds?

14. What should you expect when leaving a sheltered area during strong winds?

✓ A sudden gust may affect your vehicle.
Your steering may become lighter.
The road surface may suddenly become more slippery.
Higher speed limits.

Buildings, trees, and other obstacles can block wind. When you leave shelter, a sudden gust may push your vehicle.

Vehicle leaving a sheltered stretch of road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you reduce speed in fog?

15. Why should you reduce speed in fog?

To prevent the windscreen from misting.
✓ Because you have less time to react to hazards you cannot see.
To prevent moisture from entering the engine.
To reduce fuel consumption.

Fog can hide obstacles, pedestrians, and other vehicles. Lower speed gives you more time to react.

Fog limiting a driver's view ahead
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Which foot normally operates the brake and accelerator in a manual vehicle?

16. Which foot normally operates the brake and accelerator in a manual vehicle?

Either foot.
✓ The right foot.
The left foot for the brake and right foot for the accelerator.
The left foot.

In a manual vehicle, the right foot normally operates both the brake and accelerator pedals, while the left foot operates the clutch.

Pedal arrangement and foot controls in a manual vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you check your mirrors regularly while driving?

17. Why should you check your mirrors regularly while driving?

✓ To stay aware of traffic around you.
To judge your speed from vehicles behind.
To check whether passengers are comfortable.
To avoid having to check your blind spots.

Regular mirror checks help you understand what is happening behind and beside your vehicle.

Driver checking traffic in a rear-view mirror
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you press the clutch pedal fully when changing gear?

18. Why should you press the clutch pedal fully when changing gear?

✓ To disengage the engine fully from the transmission.
To lock the gear lever in position.
To apply the brakes.
To increase engine speed.

Pressing the clutch pedal fully disengages the engine from the transmission, allowing the gear to be changed smoothly and reducing unnecessary wear on the gearbox and clutch.

Clutch pedal pressed fully for a gear change
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control symbol indicate?

19. What does this vehicle-control symbol indicate?

Electric window control.
✓ Window lock.
Mirror adjustment.
Child safety lock.

This control activates the window lock, which normally prevents passengers from operating their electric windows while leaving control with the driver.

Lock switch for passenger window controls
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What is the button on a manual handbrake lever used for?

20. What is the button on a manual handbrake lever used for?

To select reverse gear.
To unlock the steering.
To apply the service brakes.
✓ To release the handbrake mechanism.

To release a manual handbrake, pull the lever up slightly, press and hold the release button, then lower the lever under control.

Release button on a manual handbrake lever
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if one of your tyres suddenly bursts while driving?

21. What should you do if one of your tyres suddenly bursts while driving?

Pump the brake pedal repeatedly.
Accelerate briefly to stabilise the vehicle.
Release the steering wheel and let the vehicle slow itself.
✓ Hold the steering wheel firmly and slow down gradually.

A tyre burst can make the vehicle unstable. Hold the wheel firmly, avoid sudden braking or steering, and slow down gradually.

Vehicle tyre damaged by a sudden blowout
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does the single-wipe position of the windscreen-wiper control do?

22. What does the single-wipe position of the windscreen-wiper control do?

Activates the rear wiper.
✓ Operates the windscreen wipers once.
Sprays washer fluid onto the windscreen.
Runs the wipers continuously.

The single-wipe position operates the windscreen wipers for one sweep and then stops. It is useful when only a small amount of water or spray needs to be cleared from the windscreen.

Single-wipe setting on the windscreen-wiper control
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you expect when lanes become narrower in roadworks?

23. What should you expect when lanes become narrower in roadworks?

✓ Less space between your vehicle, barriers, and other traffic.
The speed limit automatically increases.
Temporary lane markings no longer need to be followed.
All vehicles must drive in the centre of the lane.

Narrow lanes leave less room for error. Keep a steady position, avoid drifting toward barriers or nearby vehicles, and reduce speed if necessary.

Narrow traffic lanes through roadworks
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid sudden braking when it is not necessary?

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

It causes the tyres to lose pressure.
It prevents the brake lights from working properly.
It makes the steering less responsive afterwards.
✓ Vehicles behind may not have time to react.

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 is black ice?

25. What is black ice?

A dark patch of wet asphalt.
Ice that forms only during darkness.
✓ A thin, often transparent layer of ice that can be difficult to see.
Frozen mud covering the road surface.

Black ice is difficult to detect because the road surface may look merely wet. It can cause a sudden and severe loss of grip.

Thin ice covering a road surface
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you normally do after completing an overtake?

26. What should you normally do after completing an overtake?

Move back immediately in front of the vehicle you passed.
Slow down before returning to the normal lane.
✓ Return to the normal driving lane when it is safe.
Remain in the overtaking lane until another vehicle approaches.

After overtaking, return to the normal driving lane when you have passed the other vehicle by a safe distance. Check your mirrors, signal when appropriate, and avoid moving back too soon.

Vehicle returning to its lane after overtaking
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid changing lanes inside an intersection?

27. Why should you avoid changing lanes inside an intersection?

✓ It can confuse other road users and increase collision risk.
It can make your route through the junction longer.
It can make it harder to maintain a steady speed.
It can reduce the effectiveness of your indicators.

Changing lanes inside an intersection can surprise drivers, cyclists, and pedestrians. It is safer to choose the correct lane before entering.

Vehicle changing lanes within a junction
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if your vehicle begins to drift onto the shoulder?

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

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

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 does this dashboard symbol indicate?

29. What does this dashboard symbol indicate?

✓ Automatic start-stop system.
Cruise control.
Electronic stability control.
Engine-management warning.

This symbol relates to the automatic start-stop system, which can switch the engine off temporarily while the vehicle is stationary and restart it when driving resumes. The exact colour and appearance may vary between vehicles.

Automatic start-stop system symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do around a damaged electric or hybrid vehicle?

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

Move damaged high-voltage parts away from the road.
Disconnect exposed electrical components yourself.
Assume the system is safe once the vehicle is switched off.
✓ Keep clear of damaged high-voltage components and call trained assistance.

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 does this vehicle-control symbol indicate?

31. What does this vehicle-control symbol indicate?

✓ Driving mode selection.
Electronic stability control.
Cruise control.
Parking assistance.

This control selects a driving mode. Depending on the vehicle, different modes can alter characteristics such as accelerator response, steering assistance, transmission behaviour or energy use.

Selector for the vehicle's driving modes
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control symbol indicate?

32. What does this vehicle-control symbol indicate?

✓ Boot or tailgate release.
Fuel-filler flap release.
Bonnet release.
Central door locking.

This symbol indicates the boot or tailgate release. Operating the control unlocks or opens the luggage compartment, depending on the vehicle.

Boot or tailgate release control
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if the oil-pressure warning light stays on?

33. What should you do if the oil-pressure warning light stays on?

Continue slowly until you reach a service station.
✓ Stop safely, switch off the engine, and seek assistance.
Add engine oil while the engine is still running.
Increase the engine speed until the light goes out.

Low oil pressure can quickly cause severe engine damage. Stop as soon as it is safe, switch off the engine, and investigate the cause before continuing.

Oil-pressure warning illuminated on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

34. What does this dashboard symbol indicate?

Hazard warning lights.
✓ Direction indicators.
Dipped headlights.
Sidelights.

This symbol indicates that a direction indicator is operating. The flashing indicator shows the direction in which the driver intends to turn or change position on the road.

Direction-indicator symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Rain can reduce tyre grip and increase stopping distance.

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

False.
✓ True.

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
Why should you avoid braking hard on a curve?

36. Why should you avoid braking hard on a curve?

It can make the vehicle accelerate more slowly afterwards.
It can make the tyres grip the road more strongly.
✓ It can reduce control and increase the risk of skidding.
It can increase tyre pressure during the turn.

Hard braking on a curve can upset the vehicle's balance and reduce grip. Slow down before the curve and steer smoothly.

Vehicle braking while negotiating a bend
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you keep your windscreen clean?

37. Why should you keep your windscreen clean?

To make the headlights brighter.
✓ To see the road clearly.
To reduce fuel consumption.
To improve engine cooling.

A clean windscreen gives you a clear view of the road, signs, pedestrians, cyclists, and other vehicles.

Cleaning a windscreen to improve the driver's view
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before crossing the road?

38. What should you do before crossing the road?

Follow another pedestrian without checking yourself.
Look only where traffic normally comes from.
✓ Look for traffic in all directions.
Cross if the nearest vehicle is slowing down.

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
Why should cyclists avoid using a handheld phone?

39. Why should cyclists avoid using a handheld phone?

✓ It reduces your control and attention.
Because phones can interfere with bicycle electronics.
Because a phone may be used only at low speeds.
Because phones must be switched off while cycling.

Using a phone can distract you and may prevent you from steering, braking, or reacting properly.

Cyclist using a handheld phone
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you check your mirrors before braking?

40. Why should you check your mirrors before braking?

To check whether the road surface is slippery.
To decide which gear to use while slowing down.
To check whether your brake lights are working.
✓ To know what is happening behind you.

Checking your mirrors helps you understand what is happening behind you and anticipate how following traffic may react. In an emergency, do not delay necessary braking.

Driver checking following traffic before braking
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you check for motorcyclists before changing lanes?

41. Why should you check for motorcyclists before changing lanes?

✓ Motorcycles can be harder to see and may be in your blind spot.
Motorcycles always travel faster than other traffic.
Motorcyclists must stop when a car changes lanes.
Motorcyclists are required to stay beside the kerb.

Motorcyclists are smaller and can be hidden in blind spots. Check mirrors, signal, and look carefully before changing lanes.

Motorcycle near a vehicle preparing to change lanes
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid sounding the horn near horses?

42. Why should you avoid sounding the horn near horses?

The rider may think you are signalling them to stop.
✓ The noise may frighten them.
Using the horn gives the horse rider priority.
Horses cannot hear a vehicle horn clearly.

Horses can be startled by sudden or loud noises and may move unpredictably. Slow down, give them plenty of space, and avoid using the horn unless necessary.

Vehicle approaching a horse and rider
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

43. What does this dashboard symbol indicate?

✓ Charging-system warning.
Brake-system warning.
Engine-management warning.
Oil-pressure warning.

This symbol indicates a problem with the vehicle's charging system. If it remains illuminated while the engine is running, the battery may not be charging correctly because of a fault with the alternator, battery, wiring, or related components.

Charging-system warning symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should a seat belt not be twisted when worn?

44. Why should a seat belt not be twisted when worn?

A flat belt makes the seat easier to adjust.
A twisted belt can cause the buckle to open.
A twisted belt makes the brakes less effective.
✓ A flat belt spreads collision forces more effectively.

A seat belt should lie flat against the body without twists. A twisted belt concentrates force over a smaller area and may provide less effective protection in a collision.

Twisted seat belt across an occupant's body
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How can higher speed affect fuel or energy consumption?

45. How can higher speed affect fuel or energy consumption?

✓ It can increase consumption because air resistance rises.
It has no effect once the vehicle is moving.
It always reduces consumption.
It improves tyre efficiency in every situation.

As speed increases, aerodynamic resistance generally rises, so the vehicle needs more energy to maintain that speed. Driving smoothly at an appropriate speed can therefore reduce fuel or energy consumption.

Vehicle speed and aerodynamic resistance
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if your brakes feel less effective after driving through water?

46. What should you do if your brakes feel less effective after driving through water?

Increase speed to warm the brakes.
Ignore it if the vehicle still stops.
✓ Drive carefully and test them gently when safe.
Brake hard several times to dry them quickly.

Water can reduce braking performance. After driving through water, check the brakes gently when it is safe to do so.

Checking braking response after driving through water
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if oncoming headlights dazzle you at night?

47. What should you do if oncoming headlights dazzle you at night?

Maintain your speed until the vehicle has passed.
✓ Slow down and look toward the edge of your lane.
Move closer to the centre of the road for a clearer view.
Look briefly at the headlights to judge their position.

Bright headlights can reduce your vision. Avoid staring at them, slow down if needed, and use the road edge or lane markings to guide you safely.

Oncoming headlights dazzling a driver at night
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you leave extra space when following a large vehicle?

48. Why should you leave extra space when following a large vehicle?

✓ To improve your view ahead and give yourself more time to react.
To reduce the amount of fuel your vehicle uses.
To make overtaking possible without checking ahead.
To make it easier for the large vehicle to accelerate.

A large vehicle can block your view of traffic, signs, junctions, or hazards ahead. Leaving extra space improves your view and gives you more time to react if traffic slows or a hazard develops.

Large vehicle limiting a following driver's view
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid travelling with the seatback excessively reclined?

49. Why should you avoid travelling with the seatback excessively reclined?

It can prevent the head restraint from being adjusted.
✓ It can reduce how effectively the seat belt restrains you.
It can cause the seat to slide forwards when braking.
It can cause the seat belt to lock during normal driving.

An excessively reclined seat can affect how the seat belt fits and restrains your body and may increase the risk of sliding under the lap belt in a collision. Sit in a reasonably upright position so the lap belt stays low across the hips and the shoulder belt lies correctly across the chest.

Vehicle seat with an excessively reclined backrest
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do after hitting an animal with your vehicle?

50. What should you do after hitting an animal with your vehicle?

✓ Stop safely, warn other traffic, and seek appropriate help.
Approach the animal immediately.
Continue driving if the vehicle still works.
Leave the scene and report it later.

After an animal collision, stop in a safe place if possible and protect yourself and other road users from further danger. Do not approach an injured or frightened animal unless it is safe to do so. Contact the appropriate police, road authority, animal service, or emergency service as required by the situation and local rules.

Vehicle stopped after a collision with an animal
AI-generated by Traffic-rules.com • WCIT • CC BY-SA