Support us

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 should you take regular breaks during a long journey?

351. Why should you take regular breaks during a long journey?

To reduce tyre pressure.
To make the journey feel shorter.
To improve fuel quality.
✓ To help prevent fatigue and maintain concentration.

Regular breaks during a long journey help reduce fatigue and maintain concentration. Do not wait until you are struggling to stay awake before stopping to rest.

Driver resting during a long journey
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What is the purpose of heated door mirrors?

352. What is the purpose of heated door mirrors?

To improve the headlights.
To adjust the mirror angle.
To fold the mirrors automatically.
✓ To clear mist or ice from the mirror glass.

Heated door mirrors warm the mirror glass to help clear mist, condensation, or light ice and improve rearward visibility. On some vehicles, they operate together with the rear-window demister.

Heated door-mirror control and demisting function
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you leave extra following distance when towing?

353. Why should you leave extra following distance when towing?

✓ Your vehicle combination may take longer to stop.
To reduce tyre wear on the towing vehicle.
To keep the trailer from moving side to side.
To prevent the trailer from blocking your view.

Towing adds weight and can increase stopping distance. Extra space gives you more time to react and brake smoothly.

Vehicle towing a trailer behind other traffic
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What do the + and − controls normally adjust when the speed limiter is active?

354. What do the + and − controls normally adjust when the speed limiter is active?

The transmission gear.
The following distance.
✓ The selected maximum speed.
The engine idle speed.

When the speed limiter is active, the + and − controls normally increase or decrease the selected maximum speed. The exact adjustment steps can vary between vehicles.

Plus and minus controls for the speed limiter
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Which pedal is used to slow down or stop the vehicle?

355. Which pedal is used to slow down or stop the vehicle?

The accelerator pedal.
The clutch pedal.
The footrest.
✓ The brake pedal.

The brake pedal is used to reduce the vehicle's speed or bring it to a stop. In a manual vehicle, it is the middle pedal.

Brake pedal in the driver's footwell
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
It is safe to look at your phone briefly while driving.

356. It is safe to look at your phone briefly while driving.

True.
✓ False.

Using your phone while driving is distracting and dangerous, even for a very short moment.

Driver glancing at a phone while driving
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if the windscreen wipers stop working during heavy rain?

357. What should you do if the windscreen wipers stop working during heavy rain?

Use the washer fluid repeatedly to clear the windscreen.
Follow another vehicle closely so you can see its lights.
Open a side window and continue driving carefully.
✓ Reduce speed and stop in a safe place as soon as possible.

Do not continue when you cannot see clearly. Slow down smoothly and stop somewhere protected from traffic.

Windscreen wipers failing during heavy rain
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do with a helmet that has taken a significant impact in a collision?

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

Keep using it if there are no visible cracks.
✓ Stop using it and follow the manufacturer's replacement guidance.
Keep using it if the visor or straps still work.
Replace only the outer shell if it is scratched.

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

Helmet inspection after a significant impact
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if a tyre has a deep cut, bulge, or exposed cords?

359. What should you do if a tyre has a deep cut, bulge, or exposed cords?

Cover the damaged area and keep using the tyre.
Drive slowly until the next scheduled service.
Move the damaged tyre to another wheel position.
✓ Stop using the tyre and arrange professional inspection or replacement.

Cuts, bulges, and exposed cords can indicate serious structural damage. The tyre may fail suddenly and should not be used normally.

Damaged vehicle tyre requiring inspection
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you expect when leaving a tunnel in bright sunlight?

360. What should you expect when leaving a tunnel in bright sunlight?

✓ Temporary glare and reduced visibility.
The steering becoming heavier.
The speed limit automatically increasing.
The road surface becoming more slippery.

Your eyes may need time to adjust from the darker tunnel to bright daylight. Reduce speed if necessary and remain alert.

Bright sunlight at the exit of a road tunnel
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Should the legal alcohol limit be treated as a safe target?

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

Yes, if you feel completely sober.
Yes, if you know exactly how much you have drunk.
Yes, when driving only a short distance.
✓ No, impairment can begin before the legal limit is reached.

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

Alcohol consumption and the limits of safe driving
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do when driving near animals?

362. What should you do when driving near animals?

Sound your horn to make them move away.
✓ Slow down and be ready to stop.
Move closer so you can pass before they react.
Maintain speed if they remain beside the road.

Animals can move unpredictably. Slow down, stay alert, and be prepared to stop safely.

Animals near moving road traffic
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Which side do people drive on in United States?

363. Which side do people drive on in United States?

✓ Right-hand side.
Left-hand side.

Traffic drives on the right-hand side of the road in United States.

Road traffic and the designated driving side
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should a motorcyclist brake in an emergency?

364. How should a motorcyclist brake in an emergency?

Grab the front brake as suddenly as possible.
Release both brakes before stopping.
Steer sharply while braking hard.
✓ Apply both brakes firmly and progressively.

During emergency braking, use both brakes firmly and progressively while keeping the motorcycle as upright and stable as practical. Avoid sudden steering. If ABS is fitted, maintain firm braking pressure and allow the system to work.

Motorcyclist making an emergency stop
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

365. What does this dashboard symbol indicate?

Brake pads worn.
Power-steering fault.
✓ Parking brake applied.
ABS fault.

This symbol indicates that the parking brake is applied. It should normally go out when the parking brake is fully released.

Parking-brake indicator symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you slow down near schools or playgrounds?

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

School zones are closed to normal traffic.
Vehicles must stop whenever children are nearby.
✓ Children may behave unpredictably.
Children always have priority near schools.

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

Vehicle approaching a school or playground area
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if an animal is standing on the road at night?

367. What should you do if an animal is standing on the road at night?

Switch off your headlights as you approach.
Sound your horn and continue at the same speed.
Drive around it immediately without slowing down.
✓ Slow down and be prepared to stop.

Animals may freeze, turn back, or move unpredictably when caught in vehicle headlights.

Animal standing on a road at night
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Is a first-aid kit required in cars in United States?

368. Is a first-aid kit required in cars in United States?

Yes.
✓ No.

Cars in United States are not generally required to carry a first-aid kit.

First-aid kit carried in a vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do when approaching stationary or slow-moving traffic on a motorway?

369. What should you do when approaching stationary or slow-moving traffic on a motorway?

Change lanes immediately to avoid slowing down.
✓ Reduce speed early and be prepared to stop.
Follow the vehicle ahead closely to keep traffic moving.
Maintain speed until you are close to the queue.

Motorway queues can appear suddenly. Early braking gives following traffic more time to react.

Slow-moving traffic ahead on a motorway
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before driving through a puddle?

370. What should you do before driving through a puddle?

Follow another vehicle closely to judge the depth.
Brake firmly while driving through the water.
✓ Slow down and check that it is safe.
Accelerate so you spend less time in the water.

Large puddles can hide holes, reduce grip, or cause water to splash onto pedestrians or other vehicles. Slow down and proceed carefully.

Vehicle approaching a puddle on the road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if the vehicle consistently pulls to one side?

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

Increase speed to see if the vehicle straightens.
Keep driving and correct the steering as needed.
✓ Check the tyre pressures and have the steering, alignment, and brakes inspected.
Ignore it if the tyres appear normal.

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

Vehicle pulling to one side while travelling
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you adjust the seat and mirrors correctly before driving?

372. Why should you adjust the seat and mirrors correctly before driving?

To make the steering and pedals easier to operate.
✓ To maintain good control and a clear view around the vehicle.
To improve the grip of the tyres.
To make blind spots disappear completely.

A correct driving position helps you operate the pedals and steering comfortably and maintain proper control. Correctly adjusted mirrors improve your view around the vehicle and help reduce blind spots. Adjust both before starting your journey.

Adjusting the driving position and mirrors before a journey
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What colour is normally used for the centre line separating opposing traffic in United States?

373. What colour is normally used for the centre line separating opposing traffic in United States?

✓ Yellow.
White.

Roads in United States normally use a yellow centre line to separate traffic travelling in opposite directions.

Centre-line markings separating opposing traffic
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if spray from other vehicles makes it hard to see?

374. What should you do if spray from other vehicles makes it hard to see?

Move closer to the vehicle ahead for guidance.
✓ Slow down and increase following distance.
Speed up to move out of the spray more quickly.
Change lanes immediately to find a clearer view.

Spray can seriously reduce visibility. Slowing down and increasing your distance gives you more time and a clearer view.

Road spray from a vehicle ahead
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do when construction vehicles enter or leave the road?

375. What should you do when construction vehicles enter or leave the road?

Drive closely behind it until there is room to pass.
Accelerate before the vehicle reaches the road.
✓ Slow down and be prepared for them to move across your path.
Use your horn so the driver waits for you.

Construction vehicles may move slowly, have limited visibility, or carry loose material. Give them time and space to manoeuvre.

Construction vehicle entering or leaving a road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Which roads are most likely to cause aquaplaning?

376. Which roads are most likely to cause aquaplaning?

Straight roads in dry weather.
Roads with freshly painted road markings.
✓ Roads with standing water or deep puddles.
Roads with loose chippings.

Standing water can collect in dips, ruts, or puddles, increasing the chance that tyres will lose grip.

Standing water on a road surface
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you make sure drivers have seen you before crossing?

377. Why should you make sure drivers have seen you before crossing?

✓ To reduce the risk of stepping into their path.
Eye contact means the driver must stop for you.
Once a driver sees you, no further checks are needed.
A driver who sees you can always stop in time.

Before crossing, make sure approaching drivers have noticed you and that it is safe to proceed. Do not assume that a driver will stop simply because you have seen each other.

Pedestrian checking whether an approaching driver has seen them
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should you normally apply the brake pedal for a smooth stop?

378. How should you normally apply the brake pedal for a smooth stop?

Pump the pedal repeatedly.
✓ Apply pressure progressively.
Use the parking brake instead.
Press it as hard as possible immediately.

For normal braking, apply the brake pedal progressively and smoothly. As the vehicle comes to a stop, easing the pressure slightly can help avoid a sudden jerk.

Progressive brake-pedal pressure for a smooth stop
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if there is no pavement?

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

Always walk in the same direction as traffic.
✓ Walk where you can be seen and stay alert.
Pay attention only to traffic approaching from behind.
Walk close to traffic so drivers can see you.

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

Pedestrian walking beside a road without a pavement
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
You should adjust your mirrors before you start driving.

380. You should adjust your mirrors before you start driving.

✓ True.
False.

Properly adjusted mirrors improve visibility and help you monitor traffic around your vehicle.

Driver adjusting a mirror before setting off
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control symbol indicate?

381. What does this vehicle-control symbol indicate?

Front windscreen demister.
✓ Air recirculation.
Fresh-air ventilation.
Air conditioning.

This symbol activates air recirculation, which reduces the amount of outside air entering the vehicle and recirculates air already inside the cabin. It can be useful when driving through polluted air or when cooling the interior quickly.

Cabin air-recirculation control and symbol
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What is the main purpose of a booster seat?

382. What is the main purpose of a booster seat?

To move the child closer to the front seats.
✓ To position the vehicle seat belt correctly on the child.
To make the child high enough to see through the windscreen.
To allow the child to sit without wearing a seat belt.

A booster seat raises and positions a child so the vehicle seat belt fits correctly. The lap belt should sit low across the hips and the shoulder belt should pass across the chest and shoulder, rather than the neck or abdomen.

Child seated in a booster with a vehicle seat belt
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do at a railway crossing without barriers?

383. What should you do at a railway crossing without barriers?

Follow the vehicle ahead without checking yourself.
Stop only if you hear a train approaching.
Maintain your speed if the tracks look clear.
✓ Stop if required, check carefully, and cross only when safe.

Approach railway crossings carefully, obey any requirement to stop and any warning signals or barriers, and cross only when it is safe.

Railway crossing without barriers and with MUTCD-style signs
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control symbol indicate?

384. What does this vehicle-control symbol indicate?

✓ Interior lighting.
Dipped headlights.
Instrument-panel brightness.
Parking lights.

This control operates the vehicle's interior lighting. Depending on the vehicle, the lights can be switched on manually or set to illuminate automatically when a door is opened.

Control for the vehicle's interior lighting
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if traffic beyond a railway crossing is blocked?

385. What should you do if traffic beyond a railway crossing is blocked?

Follow the vehicle ahead closely across the tracks.
Stop on the tracks if no train is visible.
Cross quickly before the warning signals activate.
✓ Wait until there is enough space to clear the tracks completely.

Never enter a railway crossing unless you can clear the tracks completely. If traffic ahead is blocked, wait before the crossing so you cannot become trapped on the railway.

Congested traffic beyond a railway crossing
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should loose clothing be avoided when riding a motorcycle?

386. Why should loose clothing be avoided when riding a motorcycle?

It can make the motorcycle use more fuel.
It can prevent the engine from cooling properly.
✓ It can become caught in moving parts or distract the rider.
It can reduce the pressure in the tyres.

Loose clothing, straps or scarves can flap in the wind or become caught in moving parts such as the chain or wheel. Motorcycle clothing should fit securely and should not have loose items that could interfere with safe riding.

Motorcyclist wearing loose clothing
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you check before connecting an electric vehicle to a charger?

387. What should you check before connecting an electric vehicle to a charger?

That the vehicle's headlights are switched on.
✓ That the connector and charging equipment are suitable for the vehicle.
That the vehicle doors remain unlocked.
That the charging cable is as long as possible.

Charging connectors and charging capabilities can vary between vehicles and charging stations. Use compatible charging equipment that is suitable for the vehicle and follow the vehicle and charger manufacturer's instructions.

Matching an electric vehicle's connector to suitable charging equipment
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why is a microsleep especially dangerous while driving?

388. Why is a microsleep especially dangerous while driving?

It usually makes you drive more slowly.
✓ You can lose awareness of the road for several seconds.
It normally happens only when the vehicle is stopped.
It makes the steering feel heavier.

A microsleep is a brief, involuntary episode of sleep that can last for a few seconds. During that time, you may lose awareness of the road and travel a considerable distance without reacting to hazards.

Driver losing alertness at the wheel
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before using a pedestrian crossing?

389. What should you do before using a pedestrian crossing?

Check only the lane nearest to you before crossing.
Cross once a driver makes eye contact with you.
✓ Make sure it is safe to cross.
Rely on the crossing markings to make every vehicle stop.

Even at a pedestrian crossing, make sure approaching drivers have seen you and are able to stop before you cross.

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

390. What does this dashboard symbol indicate?

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

This symbol indicates a possible brake-system fault. If it remains illuminated after the parking brake is released, stop safely and have the braking system checked.

Brake-system warning symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you check before starting a manual vehicle?

391. What should you check before starting a manual vehicle?

That reverse gear is selected.
That the parking brake is released.
That first gear is selected and the accelerator is pressed.
✓ That the gearbox is in neutral and the clutch is pressed.

Before starting a manual vehicle, make sure the gearbox is in neutral and press the clutch pedal. This helps prevent the vehicle from moving unexpectedly when the engine starts.

Clutch and gear checks before starting a manual vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid resting your hand on the gear lever while driving?

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

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

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

Driver's hand resting on a manual gear lever
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

393. What does this dashboard symbol indicate?

Oil-pressure warning.
✓ Engine-management warning.
Diesel particulate filter warning.
Charging-system warning.

This symbol indicates a fault detected by the engine-management or emissions-control system. If it remains illuminated while driving, the vehicle should be checked according to the manufacturer's instructions.

Engine-management warning symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid overtaking when approaching a pedestrian crossing?

394. Why should you avoid overtaking when approaching a pedestrian crossing?

Crossing markings can make lane changes more difficult.
Vehicles use more braking distance near crossings.
The crossing may make it harder to judge your speed.
✓ A pedestrian may be hidden by the vehicle ahead.

A vehicle slowing or stopping near a pedestrian crossing may be hiding someone who is crossing. Overtaking could put you directly into the pedestrian's path.

Vehicles approaching a pedestrian crossing
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
You do not need to look for cyclists when opening your car door.

395. You do not need to look for cyclists when opening your car door.

True.
✓ False.

You should always check for cyclists, motorcyclists, and other road users before opening a door.

Cyclist near the door of a parked car
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should the windscreen washer reservoir contain suitable washer fluid?

396. Why should the windscreen washer reservoir contain suitable washer fluid?

Any household cleaning product can be used instead.
The reservoir needs fluid only when the windscreen is visibly dirty.
Washer fluid is needed only in freezing weather.
✓ It helps remove dirt, salt, insects, and spray from the windscreen.

A clear windscreen is essential for safe observation. Suitable washer fluid helps clean the glass and may provide protection against freezing in cold conditions.

Windscreen washer-fluid reservoir in a vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if it is unsafe to leave a stranded vehicle?

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

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

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

Vehicle stranded among moving traffic
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before leaving a motorway?

398. What should you do before leaving a motorway?

✓ Check your mirrors, signal in good time, and enter the exit lane safely.
Brake sharply before entering the exit lane.
Signal only after entering the exit lane.
Wait until the exit begins before checking your mirrors.

Plan your exit early, move into the correct lane safely, and reduce speed after entering the exit road where appropriate.

Vehicle preparing to take a motorway exit
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How can parking too close to a junction affect visibility?

399. How can parking too close to a junction affect visibility?

It affects only the driver of the parked vehicle.
It blocks the view only for pedestrians.
It has no effect if the hazard lights are on.
✓ It can block the view between road users.

Parking too close to a junction can block visibility. Drivers, cyclists, and pedestrians may have difficulty seeing each other in time.

Parked vehicle obstructing visibility near a junction
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

400. What does this dashboard symbol indicate?

Rear fog lights.
Charging-system warning.
✓ Exterior-light failure.
Dipped headlights.

This symbol indicates a possible failure of an exterior vehicle light, such as a headlight, tail light, brake light or indicator. Check the vehicle's exterior lights and replace or repair any faulty light.

Exterior-light failure warning symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA