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QuizTraffic rulesUnited States

Test your knowledge with our multiple-choice quiz. Learn from each answer and improve your understanding of the traffic rules and road signs of United States.

For informational purposes only. Always follow official regulations. Some content and images were created with AI assistance.

Traffic signs
Traffic rules
United States
True/false 17 United States 14 Car controls 109 Dashboard lights 40 Right-of-way rules 9 Pedestrians 19 Bicyclists 20 Show all 581
Why should you avoid traveling with the seatback excessively reclined?

1. Why should you avoid traveling with the seatback excessively reclined?

✓ It can reduce how effectively the seat belt restrains you.
It can make the airbag deploy earlier.
It can cause the seat to slide forward 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 does this vehicle-control symbol indicate?

2. What does this vehicle-control symbol indicate?

Power door locks.
✓ Window lock.
Mirror adjustment.
Power window control.

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

Lock switch for passenger window controls
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does the single-wipe position of the windshield-wiper control do?

3. What does the single-wipe position of the windshield-wiper control do?

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

The single-wipe position operates the windshield 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 windshield.

Single-wipe setting on the windshield-wiper control
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control symbol indicate?

4. What does this vehicle-control symbol indicate?

✓ Rear window wiper.
Windshield washer.
Windshield wiper.
Front windshield defroster.

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 if you have a tire blowout while driving?

5. What should you do if you have a tire blowout while driving?

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

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

Vehicle tire damaged by a sudden blowout
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?

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

✓ Stop, switch off the engine, avoid flames or sparks, and call for assistance.
Wash the leaking fuel away with water.
Ignore a small leak if the fuel level remains stable.
Restart the engine to check whether the leak continues.

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
How can the parking brake help when starting uphill?

7. How can the parking brake help when starting uphill?

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

When starting uphill, the parking brake can hold the vehicle stationary while you prepare to move. Release it smoothly once the clutch reaches the friction 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?

8. What does this vehicle-control symbol indicate?

Parking assistance.
Electronic stability control.
Four-wheel drive.
✓ Driving mode selection.

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

Selector for the vehicle's driving modes
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you press the clutch pedal fully when shifting gears?

9. Why should you press the clutch pedal fully when shifting gears?

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

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

10. What does this vehicle-control symbol indicate?

✓ Windshield wiper speed.
Air recirculation.
Automatic headlights.
Windshield washer.

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

Windshield-wiper control for adjusting wiping speed
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you leave extra space when following a large vehicle?

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

To reduce the amount of fuel your vehicle uses.
To make passing possible without checking ahead.
To prevent the large vehicle from changing lanes.
✓ To improve your view ahead and give yourself more time to react.

A large vehicle can block your view of traffic, signs, intersections, 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
What should you normally do after completing a pass?

12. What should you normally do after completing a pass?

Move back immediately in front of the vehicle you passed.
Remain in the passing lane until another vehicle approaches.
✓ Return to the normal driving lane when it is safe.
Stay beside the vehicle until there is another reason to change lanes.

After passing, 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 passing
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Which foot normally operates the brake and accelerator in a manual vehicle?

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

✓ The right foot.
Either 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 before braking?

14. Why should you check your mirrors before braking?

To shorten the distance needed to stop.
To decide which gear to use while slowing down.
✓ To know what is happening behind you.
To check whether your brake lights are working.

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

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

✓ Stop safely, switch off the engine, and seek assistance.
Continue slowly until you reach a service station.
Ignore it if the engine sounds normal.
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?

16. What does this dashboard symbol indicate?

✓ Turn signals.
Low-beam headlights.
Hazard warning lights.
Parking lights.

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

Turn-signal symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Which factors can increase a vehicle's stopping distance?

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

Lower speed, dry roads, and good tires.
✓ Higher speed, slower reactions, poor grip, and vehicle condition.
Driving in a lower gear and using the turn signals.
Using low-beam headlights and keeping the windows closed.

Stopping distance can increase because of higher speed, slower driver reactions, reduced tire grip, poor weather or road conditions, worn tires, 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
What does this dashboard symbol indicate?

18. What does this dashboard symbol indicate?

Power-steering warning.
Electronic stability control.
Check engine light.
✓ Low tire pressure.

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

Tire-pressure warning symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if oncoming headlights cause glare at night?

19. What should you do if oncoming headlights cause glare at night?

Maintain your speed until the vehicle has passed.
✓ Slow down and look toward the edge of your lane.
Look briefly at the headlights to judge their position.
Turn on your interior lights to reduce the glare.

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

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

Steer back onto the road as quickly as possible.
✓ Ease off the accelerator and steer back smoothly when safe.
Accelerate slightly before steering back onto the road.
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 toward the road shoulder
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid sudden braking when it is not necessary?

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

✓ Vehicles behind may not have time to react.
It prevents the brake lights from working properly.
It makes the steering less responsive afterward.
It makes the brakes less effective afterward.

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
Why should a seat belt not be twisted when worn?

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

✓ A flat belt spreads collision forces more effectively.
A flat belt makes the seat easier to adjust.
A twisted belt can cause the buckle to open.
A twisted belt prevents the airbags from working.

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
Why should you check for motorcyclists before changing lanes?

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

Motorcyclists must stop when a car changes lanes.
Motorcyclists are required to stay beside the curb.
Motorcycles need more road space than cars.
✓ Motorcycles can be harder to see and may be in your blind spot.

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 keep your windshield clean?

24. Why should you keep your windshield clean?

To prevent windshield damage.
To make the headlights brighter.
✓ To see the road clearly.
To reduce fuel consumption.

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

Cleaning a windshield to improve the driver's view
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How can higher speed affect fuel or energy consumption?

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

It has no effect once the vehicle is moving.
It reduces aerodynamic resistance.
✓ It can increase consumption because air resistance rises.
It always reduces consumption.

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
Why should you avoid changing lanes inside an intersection?

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

It can make it harder to maintain a steady speed.
✓ It can confuse other road users and increase collision risk.
It can make road markings harder to follow.
It can make your route through the intersection longer.

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

Vehicle changing lanes within an intersection
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if your brakes feel less effective after driving through water?

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

Increase speed to warm the brakes.
✓ Drive carefully and test them gently when safe.
Use only the parking brake until they dry.
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 expect when leaving a sheltered area during strong winds?

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

The road surface may suddenly become more slippery.
The vehicle may automatically slow down.
✓ A sudden gust may affect your vehicle.
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
What is the button on a manual parking brake lever used for?

29. What is the button on a manual parking brake lever used for?

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

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

Release button on a manual parking brake lever
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What makes up the total stopping distance of a vehicle?

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

Reaction distance and following distance.
Tire distance and braking distance.
✓ Reaction distance and braking distance.
Braking distance and passing distance.

The total stopping distance consists of the distance traveled while the driver reacts to a hazard plus the distance traveled 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
What is black ice?

31. What is black ice?

Snow mixed with road dirt.
Ice that forms only during darkness.
Frozen mud covering the road surface.
✓ A thin, often transparent layer of ice that can be difficult to see.

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
Why is it important to make yourself visible at night?

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

To make it safe to walk closer to moving traffic.
To avoid checking for approaching vehicles.
✓ To make drivers see you more easily.
To make drivers yield 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
How should bicyclists cross railroad or streetcar tracks?

33. How should bicyclists cross railroad or streetcar tracks?

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

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

Bicyclist crossing rails in the road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do after hitting an animal with your vehicle?

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

Approach the animal immediately.
Move the animal yourself before checking for traffic.
Leave the scene and report it later.
✓ Stop safely, warn other traffic, and seek appropriate help.

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
Why should you be careful when taking more than one medication before driving?

35. Why should you be careful when taking more than one medication before driving?

They may make the vehicle use more fuel.
✓ Their combined effects may impair your ability to drive.
They may interfere with the vehicle's electronics.
They can change the tire pressure.

Different medications 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 does this vehicle-control symbol indicate?

36. What does this vehicle-control symbol indicate?

✓ Trunk or tailgate release.
Fuel-filler flap release.
Window lock.
Hood release.

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

Trunk or tailgate release control
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you expect when lanes become narrower in a work zone?

37. What should you expect when lanes become narrower in a work zone?

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

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 road work
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you check before starting a long trip?

38. What should you check before starting a long trip?

Nothing if the vehicle was recently serviced.
✓ Tires, lights, fluids, windows, mirrors, and essential equipment.
Only the tires and fuel level.
Only the lights if you plan to drive at night.

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

Vehicle safety checks before a long trip
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do around a damaged electric or hybrid vehicle?

39. 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
Rain can reduce tire grip and increase stopping distance.

40. Rain can reduce tire grip and increase stopping distance.

False.
✓ True.

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

Vehicle traveling on a wet road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

41. What does this dashboard symbol indicate?

✓ Charging-system warning.
Brake-system warning.
Check engine light.
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 you check your mirrors regularly while driving?

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

To avoid having to check your blind spots.
To judge your speed from vehicles behind.
To see whether road signs behind you have changed.
✓ To stay aware of traffic around you.

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

Driver checking traffic in a rearview mirror
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid sounding the horn near horses?

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

✓ The noise may frighten them.
The rider may think you are signaling them to stop.
Horses cannot hear a vehicle horn clearly.
Using the horn gives the horse rider the right-of-way.

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
How should a bicyclist react to a pothole?

44. How should a bicyclist react to a pothole?

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

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

Bicyclist approaching a pothole
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid braking hard on a curve?

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

✓ It can reduce control and increase the risk of skidding.
It can increase tire pressure during the turn.
It can make the vehicle accelerate more slowly afterward.
It can make the tires grip the road more strongly.

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 curve
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you reduce speed in fog?

46. Why should you reduce speed in fog?

To prevent the windshield from misting.
To reduce vehicle emissions.
To prevent moisture from entering the engine.
✓ Because you have less time to react to hazards you cannot see.

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
Why should bicyclists avoid using a handheld phone?

47. Why should bicyclists avoid using a handheld phone?

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

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

Bicyclist using a handheld phone
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if the service brakes fail while driving?

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

✓ Reduce speed using other available braking methods and stop safely.
Apply the parking brake suddenly at full force.
Switch off the engine immediately while moving.
Shift into neutral and let the vehicle coast to a stop.

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 does this dashboard symbol indicate?

49. What does this dashboard symbol indicate?

✓ Automatic start-stop system.
Cruise control.
Anti-theft system.
Electronic stability control.

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 color 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 before crossing the road?

50. What should you do before crossing the road?

Look only where traffic normally comes from.
✓ Look for traffic in all directions.
Follow another pedestrian without checking yourself.
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