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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
What does this vehicle-control symbol indicate?

51. What does this vehicle-control symbol indicate?

Main beam.
Instrument-panel brightness.
✓ Headlight level adjustment.
Front fog lights.

This control adjusts the vertical aim of the headlights. It can be used to lower the beam when the vehicle is heavily loaded, helping to avoid dazzling other road users.

Control for adjusting the headlight beam height
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if fuel spills while you are refuelling?

52. What should you do if fuel spills while you are refuelling?

Continue filling the tank and clean it up afterwards.
Wash the spill away with water and continue refuelling.
✓ Stop refuelling, avoid ignition sources, and alert station staff.
Start the engine and move the vehicle immediately.

If fuel is spilled, stop refuelling immediately and keep flames, sparks, and other ignition sources away. Do not start the vehicle until the situation is safe. Alert filling-station staff and follow their instructions for dealing with the spill.

Fuel spilled during refuelling
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you check before towing a trailer?

53. What should you check before towing a trailer?

Check the tyres only if the trailer has been unused.
✓ The coupling, safety connections, lights, tyres, and load.
Secure the load only if it is heavy.
Check only that the trailer is securely coupled.

The trailer must be correctly connected and roadworthy. Its lights, tyres, safety connections, and load should all be checked.

Checking a trailer before towing
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does the ACC position of a traditional ignition switch normally allow?

54. What does the ACC position of a traditional ignition switch normally allow?

The transmission to select Drive.
The parking brake to release.
✓ Electrical accessories to be used without starting the engine.
The starter motor to turn the engine.

The ACC (accessory) position normally supplies power to certain electrical accessories, such as the audio system, without starting the engine. The exact functions available can vary between vehicles.

ACC accessory position on an ignition switch
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if the pedestrian light is red?

55. What should you do if the pedestrian light is red?

✓ Wait until it turns green.
Cross if there is a large enough gap in traffic.
Cross if another pedestrian has already started.
Cross if nearby vehicles appear to have stopped.

A red pedestrian signal means you should wait before crossing.

Red pedestrian signal at a crossing
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should a front passenger keep their feet off the dashboard?

56. Why should a front passenger keep their feet off the dashboard?

It can prevent the passenger airbag from deploying.
It can make the front seat slide forwards during braking.
It can interfere with the rear-view mirror.
✓ It can greatly increase the risk of injury if the airbag deploys.

A front airbag deploys very quickly and with considerable force. If a passenger has their feet or legs on the dashboard, airbag deployment can force their legs backwards and greatly increase the risk of serious injury. Passengers should sit normally with their feet in the footwell and wear their seat belts correctly. The driver should make sure everyone is seated and restrained safely before setting off.

Passenger resting their feet on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if traffic stops inside a tunnel?

57. What should you do if traffic stops inside a tunnel?

Make a U-turn and leave the tunnel.
Drive onto the pedestrian walkway.
✓ Stop at a safe distance and follow signals or instructions.
Reverse toward the tunnel entrance.

Remain calm, keep space from the vehicle ahead, and obey traffic signals, signs, or instructions from tunnel staff.

Traffic stopped inside a road tunnel
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why is counting drinks an unreliable way to decide whether you can drive?

58. Why is counting drinks an unreliable way to decide whether you can drive?

One drink affects every person in the same way.
Food makes each drink count as less alcohol.
You can judge your alcohol level by how sober you feel.
✓ Drink strength, serving size, and individual effects can vary.

Alcohol concentration and serving sizes vary, and factors such as body size, food, medication, and time can affect impairment.

Alcoholic drinks with different strengths and serving sizes
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do with the clutch when bringing a manual vehicle to a stop?

59. What should you do with the clutch when bringing a manual vehicle to a stop?

Pump it repeatedly while braking.
✓ Press it before the engine begins to stall.
Keep it released until after the vehicle stops.
Press it before using the brake pedal.

When stopping a manual vehicle, brake normally and press the clutch pedal before the engine speed becomes too low and the engine stalls. Avoid pressing the clutch unnecessarily early, as this reduces engine braking.

Clutch-pedal operation when stopping a manual vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control symbol indicate?

60. What does this vehicle-control symbol indicate?

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

This control operates the vehicle's electric windows. Pressing or pulling the switch lowers or raises the corresponding window.

Switch for operating an electric window
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do when a road worker directs traffic?

61. What should you do when a road worker directs traffic?

Follow the normal traffic signs instead.
✓ Follow the worker's signals and instructions.
Follow the vehicle ahead instead of the worker's signal.
Wait for a police officer to confirm the signal.

Authorised road workers may control traffic through a work zone. Watch carefully and follow their directions.

Road worker directing traffic
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why can loud music be dangerous while cycling?

62. Why can loud music be dangerous while cycling?

It reduces the grip of the tyres.
✓ You may not hear traffic or warning sounds.
It makes bicycle lights less effective.
It makes the bicycle harder to balance.

Hearing approaching vehicles, bells, horns, and other warning sounds is an important part of staying aware.

Cyclist listening to music near traffic
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should cyclists brake on a wet road?

63. How should cyclists brake on a wet road?

Use only one brake to avoid skidding.
Brake normally because wet roads do not affect grip.
Brake sharply once you are close to stopping.
✓ Brake earlier and more gradually than usual.

Wet surfaces reduce grip and increase stopping distance. Smooth, early braking helps prevent skidding.

Cyclist braking on a wet road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if the windscreen becomes damaged while driving?

64. What should you do if the windscreen becomes damaged while driving?

Remove loose glass while the vehicle is moving.
✓ Reduce speed and stop safely if your view is affected.
Rely on the mirrors instead of the windscreen.
Continue driving if you can still see part of the road.

Severe damage can obstruct your view and weaken the glass. Do not continue if you cannot see the road clearly.

Damaged windscreen affecting the driver's view
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

65. What does this dashboard symbol indicate?

Parking assistance.
✓ Adaptive cruise control.
Lane-departure warning.
Electronic stability control.

This symbol relates to adaptive cruise control (ACC). The system can maintain a selected speed and automatically adjust the vehicle's speed to help maintain a set distance from traffic ahead.

Adaptive cruise-control symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

66. What does this dashboard symbol indicate?

Brake-system warning.
Charging-system warning.
✓ Airbag system warning.
Seat-belt reminder.

This symbol indicates a possible fault in the airbag or supplementary restraint system. If it remains illuminated while driving, the system should be checked because one or more airbags or seat-belt pretensioners may not operate correctly in a collision.

Airbag-system warning symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you adjust your speed in bad weather?

67. Why should you adjust your speed in bad weather?

✓ Because visibility and grip may be reduced.
To reduce fuel consumption.
To prevent the tyres from losing air pressure.
To keep the engine from overheating.

Rain, snow, fog, and ice can reduce visibility and tyre grip. Lower speed gives you more time and distance to react and stop safely.

Vehicle travelling in poor weather
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

68. What does this dashboard symbol indicate?

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

This symbol indicates that the sidelights, also known as position or parking lights, are switched on. They help make the vehicle visible to other road users but provide little illumination of the road ahead.

Sidelight indicator symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid using a phone while driving?

69. Why should you avoid using a phone while driving?

Because it can cause road rage.
✓ Because it distracts you from the road.
Because it can disable the cruise control system.
Because phone signals can interfere with vehicle electronics.

Using a phone while driving reduces attention, reaction time, and control of the vehicle. A hands-free system may reduce the need to handle the phone, but the conversation itself can still be distracting.

Phone distracting a driver from the road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should heavy items be placed low and evenly distributed?

70. Why should heavy items be placed low and evenly distributed?

To make the steering lighter.
To increase the available luggage space.
To reduce wear on the engine.
✓ To help keep the vehicle stable.

A high or uneven load can make the vehicle unstable, especially during braking, cornering, or sudden steering.

Heavy luggage positioned low in a vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should cyclists do when approaching a junction?

71. What should cyclists do when approaching a junction?

Rely on other road users to give way to you.
Maintain your speed if no traffic is visible.
✓ Reduce speed, observe carefully, and be ready to stop.
Watch only the traffic directly ahead of you.

Junctions create conflict points between road users. Slowing down gives you more time to see hazards and react safely.

Cyclist approaching a road junction
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if another driver behaves aggressively towards you?

72. What should you do if another driver behaves aggressively towards you?

✓ Stay calm, avoid confrontation, and create more distance.
Stop beside them so you can discuss the problem.
Speed up to prevent them from passing you.
Respond with your horn and gestures.

If another driver behaves aggressively, do not retaliate or become involved in a confrontation. Stay calm, increase the distance between you, and let the other vehicle move away when possible. If you feel threatened, go to a safe public place and seek appropriate assistance.

Driver facing aggressive behaviour from another road user
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does the ON position of a traditional ignition switch normally do?

73. What does the ON position of a traditional ignition switch normally do?

✓ Switches on the vehicle's electrical systems without operating the starter.
Switches off all electrical accessories.
Locks the steering.
Turns the starter motor.

The ON position normally switches on the vehicle's electrical and ignition systems without operating the starter motor. The engine is started by turning the key further to the START position.

ON position on a traditional ignition switch
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
When should you consider delaying a journey because of severe weather?

74. When should you consider delaying a journey because of severe weather?

Only when your vehicle has no winter tyres.
✓ When conditions make driving unsafe.
Never, if the vehicle is in good condition.
Only when roads are closed.

Severe weather can create dangerous conditions. Delaying a journey may be the safest choice when risks are too high.

Severe weather making a road journey hazardous
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if a motorcycle helmet visor is badly scratched?

75. What should you do if a motorcycle helmet visor is badly scratched?

✓ Replace it before riding.
Keep using it if the weather is dry.
Ride with the visor raised.
Cover the scratches with clear tape.

A badly scratched or damaged visor can reduce or distort your view, especially in bright sunlight or at night. Replace a visor that no longer provides a clear, safe view and follow the helmet manufacturer's instructions.

Scratched visor on a motorcycle helmet
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you avoid if your vehicle loses grip on a wet road?

76. What should you avoid if your vehicle loses grip on a wet road?

Holding the steering wheel firmly.
✓ Sudden braking or sharp steering.
Keeping your movements smooth and controlled.
Looking ahead and staying alert.

Abrupt inputs can upset the vehicle further. Smooth control gives the tyres a better chance to regain grip.

Vehicle losing grip on a wet road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do when driving near a school area?

77. What should you do when driving near a school area?

✓ Slow down and watch carefully for children.
Use your horn so children stay away from traffic.
Maintain your usual speed if the road looks clear.
Watch only for children already on the road.

Children near schools may cross unexpectedly or be hidden between parked vehicles. Reduce speed and be ready to stop.

Vehicle travelling near a school
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before changing lanes?

78. What should you do before changing lanes?

Check only the lane directly beside you.
✓ Check your mirrors and blind spot.
Speed up and move over before nearby traffic catches up.
Check the blind spot only after starting to move.

Always check your mirrors, look over your shoulder if necessary, and make sure it is safe before changing lanes.

Driver checking surrounding traffic before changing lanes
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do when crossing a road with no marked crossing nearby?

79. What should you do when crossing a road with no marked crossing nearby?

Cross between parked vehicles if traffic seems quiet.
Cross where the road is narrowest, even if visibility is poor.
✓ Choose a place with a clear view in both directions.
Cross diagonally to spend less time in each lane.

If there is no marked crossing nearby, choose a safe place where you can clearly see approaching traffic.

Pedestrian preparing to cross a road without a marked crossing
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you increase your following distance on wet roads?

80. Why should you increase your following distance on wet roads?

✓ Because braking distances are longer.
Because wet roads make the speedometer less accurate.
Because vehicles ahead have priority in rain.
To reduce road surface damage.

Water reduces grip between the tyres and the road, so it takes longer to slow down or stop safely.

Following distance between vehicles on a wet road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do after fitting a temporary spare wheel?

81. What should you do after fitting a temporary spare wheel?

Use it as a permanent replacement if it looks undamaged.
Ignore its speed restriction on short journeys.
✓ Follow its speed and distance restrictions and replace it as soon as possible.
Drive normally if the vehicle feels stable.

Temporary spare wheels may have limited speed, distance, and handling capabilities. Arrange a proper repair or replacement promptly.

Temporary spare wheel fitted to a vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do at a railway crossing with warning lights flashing?

82. What should you do at a railway crossing with warning lights flashing?

✓ Stop before the crossing and wait until it is safe to proceed.
Drive around the barrier if the road ahead is clear.
Follow the vehicle ahead across the tracks.
Cross quickly before the train reaches the crossing.

Flashing warning lights mean a train may be approaching. Stop before the crossing and wait until the warning has ended and the crossing is clear.

Flashing warning lights at a railway crossing
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

83. What does this dashboard symbol indicate?

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

This symbol indicates that the main beam headlights are switched on. Main beam illuminates the road farther ahead but can dazzle other road users, so it should be changed to dipped headlights when necessary.

Main-beam headlight symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

84. What does this dashboard symbol indicate?

✓ Lane-departure warning.
Parking assistance.
Automatic emergency braking.
Electronic stability control.

This symbol relates to the lane-departure warning or lane-keeping system. The system monitors the vehicle's position within its lane and may warn the driver if the vehicle begins to leave the lane unintentionally.

Lane-departure warning symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
You may park anywhere as long as you leave your hazard lights on.

85. You may park anywhere as long as you leave your hazard lights on.

✓ False.
True.

Hazard lights are used to warn other road users of a hazard or an unexpectedly stopped vehicle. They do not make illegal or unsafe parking acceptable.

Parked vehicle with hazard warning lights flashing
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do when driving on icy roads?

86. What should you do when driving on icy roads?

Brake firmly before bends to reduce speed.
Follow the vehicle ahead more closely for guidance.
Use quick steering corrections if the vehicle starts to slide.
✓ Drive slowly and avoid sudden braking, steering, or acceleration.

Ice greatly reduces tyre grip. Drive gently, keep extra distance, and avoid sudden movements that could cause a skid.

Vehicle travelling on an icy road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if another vehicle is signalling to turn?

87. What should you do if another vehicle is signalling to turn?

Pull out because the vehicle will turn.
Use your horn and proceed immediately.
✓ Do not rely on the signal alone, proceed only when it is safe.
Assume the driver has seen you.

An indicator shows an intention, but it does not guarantee that the driver will turn. The signal may have been left on accidentally or the driver's intentions may change. Observe the vehicle's speed and position and proceed only when you are sure it is safe.

Another vehicle signalling to turn
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if the engine-temperature warning shows overheating?

88. What should you do if the engine-temperature warning shows overheating?

Open the coolant cap immediately to release heat.
Increase engine speed to improve coolant circulation.
Ignore it if the engine still sounds normal.
✓ Stop safely, switch off the engine, and allow it to cool.

Continuing to drive an overheating vehicle can cause severe damage. Allow the engine to cool and follow the manufacturer's instructions.

Engine-overheating warning on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should you use the clutch and accelerator when moving off?

89. How should you use the clutch and accelerator when moving off?

Release the clutch suddenly without using the accelerator.
✓ Release the clutch smoothly while applying the accelerator progressively.
Press the brake and accelerator together.
Keep the clutch fully pressed while accelerating.

When moving off, release the clutch pedal smoothly through the biting point while applying the accelerator progressively. This helps the vehicle move away smoothly without stalling or excessive engine speed.

Coordinating the clutch and accelerator when moving off
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Which distance unit is used on road signs in United States?

90. Which distance unit is used on road signs in United States?

✓ Miles.
Kilometres.

Road distances in United States are normally shown in miles.

Distance units used on road signs
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if traffic stops and a driver waves you across?

91. What should you do if traffic stops and a driver waves you across?

Watch the stopped driver instead of the other traffic.
Cross immediately once the driver waves you through.
✓ Check that all lanes are safe before crossing.
Assume traffic in the other lanes will also stop.

One driver may stop, but other vehicles may still be moving. Always check all lanes before crossing.

Driver waving a pedestrian across the road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if a friend who has been drinking wants to drive?

92. What should you do if a friend who has been drinking wants to drive?

Let them drive if they say they feel sober.
Give them coffee and wait a short while.
✓ Encourage them not to drive and arrange safe transport.
Follow them home in another vehicle.

Preventing an impaired person from driving can protect them, their passengers, and other road users. Arrange a sober driver, taxi, public transport, or accommodation.

Friends discussing safe transport after drinking
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should a three-point seat belt normally be worn during pregnancy?

93. How should a three-point seat belt normally be worn during pregnancy?

✓ With the lap belt low across the hips and the shoulder belt across the chest.
Using only the lap section of the seat belt.
Loosely fitted so it does not press against the body.
With the lap belt positioned across the abdomen.

During pregnancy, a three-point seat belt should be worn correctly. The lap belt should sit low across the hips, below the abdomen, while the shoulder belt should pass across the chest and to the side of the abdomen. The belt should fit snugly and should not be placed behind the back or under the arm.

Seat-belt positioning during pregnancy
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control button operate?

94. What does this vehicle-control button operate?

The parking brake.
✓ The engine or drive system.
The automatic start-stop system.
The hazard warning lights.

The engine start/stop button is used to start or switch off the vehicle's engine or electric drive system. Starting the vehicle normally also requires the brake or clutch pedal to be pressed.

Engine start/stop button in a vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you obey traffic signs?

95. Why should you obey traffic signs?

To make sure you always have priority.
To make other drivers responsible for your safety.
✓ To improve safety for everyone.
To avoid checking for other road users.

Traffic signs help organise traffic and improve safety for drivers, cyclists, and pedestrians.

Traffic signs using Vienna-style designs
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid using an ordinary extension lead to charge an electric vehicle?

96. Why should you avoid using an ordinary extension lead to charge an electric vehicle?

It prevents the charging port from closing afterwards.
It will always charge the vehicle too quickly.
✓ It may overheat because it is not designed for continuous high-power charging.
It can make the vehicle battery lose capacity immediately.

An ordinary household extension lead may not be designed for the sustained electrical load required for EV charging and can overheat. Use suitable approved charging equipment and follow the vehicle and charging-equipment manufacturer's instructions.

Extension lead used for electric-vehicle charging
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why is riding a bicycle after drinking alcohol dangerous?

97. Why is riding a bicycle after drinking alcohol dangerous?

Cycling after drinking is safe on quiet roads.
A small amount of alcohol improves balance.
A helmet protects you from alcohol-related risks.
✓ Alcohol can reduce your balance, coordination, judgement, and reaction time.

Alcohol can make it harder to balance, steer, judge distances, and react to hazards. Riding a bicycle while impaired may also be against the law.

Alcohol consumption and bicycle-riding safety
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before opening your car door near traffic?

98. What should you do before opening your car door near traffic?

Open the door slowly and expect traffic to avoid you.
Signal before opening the door without checking behind.
Check only for vehicles, not cyclists or pedestrians.
✓ Check for cyclists, pedestrians, and vehicles.

Before opening a car door, check carefully for cyclists, pedestrians, and vehicles to avoid causing a collision.

Checking for passing road users before opening a car door
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

99. What does this dashboard symbol indicate?

✓ Anti-lock braking system warning.
Electronic stability control.
Low tyre pressure.
Brake-pad wear warning.

This symbol indicates a possible fault with the anti-lock braking system (ABS). Normal braking may still be available, but ABS may not operate during heavy braking, so the system should be checked.

Anti-lock braking system warning symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if you notice an unfamiliar fluid underneath your vehicle?

100. What should you do if you notice an unfamiliar fluid underneath your vehicle?

Top up the fluid levels and continue driving.
Wait until the vehicle develops another problem.
Assume a small leak is harmless condensation.
✓ Do not ignore it. Identify the fluid and arrange an inspection if necessary.

Clear water from air conditioning can be normal, but oil, coolant, fuel, transmission fluid, or brake fluid may indicate a fault requiring urgent attention.

Fluid leaking underneath a parked vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA