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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
What should you do at a railroad crossing with warning lights flashing?

51. What should you do at a railroad crossing with warning lights flashing?

Continue if you cannot see or hear a train.
Drive around the barrier if the road ahead is clear.
Follow the vehicle ahead across the tracks.
✓ Stop before the crossing and wait until it is safe to proceed.

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 railroad crossing
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

52. What does this dashboard symbol indicate?

High-beam headlights.
Front fog lights.
Rear fog lights.
✓ Parking lights.

This symbol indicates that the parking lights, also known as position 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?

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

✓ Because it distracts you from the road.
Because phone signals can interfere with vehicle electronics.
Because it can cause road rage.
Because it can make your reactions faster.

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
What should you do when the pedestrian signal tells you not to start crossing?

54. What should you do when the pedestrian signal tells you not to start crossing?

Cross if nearby vehicles appear to have stopped.
✓ Wait for a WALK indication, then check for traffic.
Cross if another pedestrian has already started.
Cross if there is a large enough gap in traffic.

Do not start crossing during a DON'T WALK indication. Wait for a WALK indication, then check for traffic before entering the crosswalk.

Red pedestrian signal at a crossing
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
You may park anywhere as long as you leave your hazard lights on.

55. 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
Why should you obey traffic signs?

56. Why should you obey traffic signs?

To let you drive at the maximum permitted speed.
✓ To improve safety for everyone.
To make sure you always have the right-of-way.
To make other drivers responsible for your safety.

Traffic signs help organize traffic and improve safety for drivers, bicyclists, and pedestrians.

Traffic signs using Vienna-style designs
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do when a road worker directs traffic?

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

✓ Follow the worker's signals and instructions.
Follow the normal traffic signs instead.
Obey only if traffic has completely stopped.
Wait for a police officer to confirm the signal.

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

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

✓ Miles.
Kilometers.

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 the engine-temperature warning shows overheating?

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

✓ Stop safely, switch off the engine, and allow it to cool.
Continue driving slowly until the warning disappears.
Open the coolant cap immediately to release heat.
Increase engine speed to improve coolant circulation.

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
What should you do if fuel spills while you are refueling?

60. What should you do if fuel spills while you are refueling?

Continue filling the tank and clean it up afterward.
Wash the spill away with water and continue refueling.
Ignore the spill if only a small amount escaped.
✓ Stop refueling, avoid ignition sources, and alert station staff.

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

Fuel spilled during refueling
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control symbol indicate?

61. What does this vehicle-control symbol indicate?

Power door locks.
Mirror adjustment.
Child safety lock.
✓ Power window control.

This control operates the vehicle's power 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
Why should heavy items be placed low and evenly distributed?

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

To make the steering lighter.
To reduce fuel consumption.
✓ To help keep the vehicle stable.
To reduce wear on the engine.

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
Why can loud music be dangerous while cycling?

63. Why can loud music be dangerous while cycling?

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

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

Bicyclist listening to music near traffic
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if a motorcycle helmet visor is badly scratched?

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

Ride with the visor raised.
✓ Replace it before riding.
Use it only during daylight.
Keep using it if the weather is dry.

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 do if a friend who has been drinking wants to drive?

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

✓ Encourage them not to drive and arrange safe transport.
Follow them home in another vehicle.
Give them coffee and wait a short while.
Let them drive slowly on quiet roads.

Preventing an impaired person from driving can protect them, their passengers, and other road users. Arrange a sober driver, taxi, public transit, or a place to stay overnight.

Friends discussing safe transport after drinking
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should you use the clutch and accelerator when starting from a stop?

66. How should you use the clutch and accelerator when starting from a stop?

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

When starting from a stop, release the clutch pedal smoothly through the friction 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
What does this dashboard symbol indicate?

67. What does this dashboard symbol indicate?

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

This symbol indicates a possible fault in the airbag or supplemental 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
What should you do if you notice an unfamiliar fluid underneath your vehicle?

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

Wait until the vehicle develops another problem.
Assume a small leak is harmless condensation.
Top up the fluid levels and continue driving.
✓ 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
What should you do when driving near a school area?

69. 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.
Drive close behind other vehicles to keep traffic moving.
Maintain your usual speed if the road looks clear.

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

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

70. What does this dashboard symbol indicate?

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

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 before opening your car door near traffic?

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

Check only for vehicles, not bicyclists or pedestrians.
Check only the mirror before opening the door.
✓ Check for bicyclists, pedestrians, and vehicles.
Signal before opening the door without checking behind.

Before opening a car door, check carefully for bicyclists, 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
Why is counting drinks an unreliable way to decide whether you can drive?

72. 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 if traffic stops and a driver waves you across?

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

Check only the lane nearest to you.
✓ Check that all lanes are safe before crossing.
Watch the stopped driver instead of the other traffic.
Cross immediately once the driver waves you through.

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
Why should you avoid using an ordinary extension cord to charge an electric vehicle?

74. Why should you avoid using an ordinary extension cord to charge an electric vehicle?

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.
It prevents the vehicle from locking while charging.

An ordinary household extension cord 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 should a front passenger keep their feet off the dashboard?

75. 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 forward during braking.
It can interfere with the rearview 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 backward 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 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.
Easing off the accelerator gradually.
Keeping your movements smooth and controlled.
✓ Sudden braking or sharp steering.

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

Vehicle losing grip on a wet road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control button operate?

77. What does this vehicle-control button operate?

✓ The engine or drive system.
The parking brake.
The automatic start-stop system.
The power door lock system.

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
What should you check before towing a trailer?

78. What should you check before towing a trailer?

✓ The coupling, safety connections, lights, tires, and load.
Check only that the trailer is securely coupled.
Check the tires only if the trailer has been unused.
Check the lights after you have started driving.

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

Checking a trailer before towing
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you adjust your speed in bad weather?

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

To prevent the tires from losing air pressure.
To keep the engine from overheating.
To make the windshield wipers work better.
✓ Because visibility and grip may be reduced.

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

Vehicle traveling in poor weather
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does the ON position of a traditional ignition switch normally do?

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

Switches off all electrical accessories.
Locks the steering.
✓ Switches on the vehicle's electrical systems without operating the starter.
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 trip because of severe weather?

81. When should you consider delaying a trip because of severe weather?

✓ When conditions make driving unsafe.
Whenever the weather forecast mentions rain.
Never, if the vehicle is in good condition.
Only when roads are closed.

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

Severe weather making a road trip hazardous
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should bicyclists do when approaching an intersection?

82. What should bicyclists do when approaching an intersection?

✓ Reduce speed, observe carefully, and be ready to stop.
Maintain your speed if no traffic is visible.
Rely on other road users to yield to you.
Accelerate so you spend less time at the intersection.

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

Bicyclist approaching a road intersection
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you increase your following distance on wet roads?

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

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

Water reduces grip between the tires 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 does this dashboard symbol indicate?

84. What does this dashboard symbol indicate?

Lane-departure warning.
Electronic stability control.
✓ Adaptive cruise control.
Automatic start-stop system.

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 should you do if traffic stops inside a tunnel?

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

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

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
How should bicyclists brake on a wet road?

86. How should bicyclists brake on a wet road?

✓ Brake earlier and more gradually than usual.
Brake normally because wet roads do not affect grip.
Brake later and more firmly than usual.
Use only one brake to avoid skidding.

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

Bicyclist braking on a wet road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do when driving on icy roads?

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

✓ Drive slowly and avoid sudden braking, steering, or acceleration.
Maintain normal speed if the road appears clear.
Use quick steering corrections if the vehicle starts to slide.
Brake firmly before curves to reduce speed.

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

Vehicle traveling on an icy road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do when crossing a road with no marked crossing nearby?

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

Cross between parked vehicles if traffic seems quiet.
Cross near a curve if approaching traffic seems slow.
✓ Choose a place with a clear view in both directions.
Cross where the road is narrowest, even if visibility is poor.

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
What should you do before changing lanes?

89. What should you do before changing lanes?

Speed up and move over before nearby traffic catches up.
Check only the lane directly beside you.
Rely on your mirrors without checking the blind spot.
✓ Check your mirrors and blind spot.

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 with the clutch when bringing a manual vehicle to a stop?

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

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

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

91. 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.
With the lap belt positioned across the abdomen.
With the shoulder belt placed behind the back.

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
Why is riding a bicycle after drinking alcohol dangerous?

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

A small amount of alcohol improves balance.
A helmet protects you from alcohol-related risks.
Cycling after drinking is safe on quiet roads.
✓ Alcohol can impair balance, coordination, and judgment and slow your reactions.

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 if another vehicle is signaling to turn?

93. What should you do if another vehicle is signaling to turn?

Enter the road before the vehicle reaches you.
✓ Do not rely on the signal alone, proceed only when it is safe.
Pull out because the vehicle will turn.
Use your horn and proceed immediately.

A turn signal 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 signaling to turn
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if the windshield becomes damaged while driving?

94. What should you do if the windshield becomes damaged while driving?

Drive faster to reach a safe place sooner.
Rely on the mirrors instead of the windshield.
Remove loose glass while the vehicle is moving.
✓ Reduce speed and stop safely if your view is affected.

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

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

95. What does this dashboard symbol indicate?

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

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
What should you do after installing a temporary spare tire?

96. What should you do after installing a temporary spare tire?

Ignore its speed restriction on short trips.
Increase its pressure to match the other tires.
Use it as a permanent replacement if it looks undamaged.
✓ Follow its speed and distance restrictions and replace it as soon as possible.

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

Temporary spare tire installed on a vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control symbol indicate?

97. What does this vehicle-control symbol indicate?

✓ Headlight level adjustment.
Instrument-panel brightness.
Automatic headlights.
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 causing glare for 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 another driver behaves aggressively toward you?

98. What should you do if another driver behaves aggressively toward you?

Follow them closely to show your disapproval.
Stop beside them so you can discuss the problem.
Speed up to prevent them from passing you.
✓ Stay calm, avoid confrontation, and create more distance.

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 behavior from another road user
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does the ACC position of a traditional ignition switch normally allow?

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

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

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 does this dashboard symbol indicate?

100. What does this dashboard symbol indicate?

Rear fog lights.
✓ High-beam headlights.
Low-beam headlights.
Parking lights.

This symbol indicates that the high-beam headlights are on. High beams illuminate the road farther ahead but can cause glare for other road users. Switch to low beams when necessary.

High-beam headlight symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA