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QuizTraffic rulesUnited States

This interesting quiz helps you test your knowledge in a clear and visual way. With easy multiple-choice questions, you can quickly build confidence and learn new facts while keeping it simple, interactive, and fun.

Traffic signs
Traffic rules
United States
True/false 17 United States 14 Car controls 109 Dashboard lights 40 Priority rules 9 Pedestrians 19 Cyclists 20 Show all 581
Why is adequate tyre tread important?

401. Why is adequate tyre tread important?

It increases the amount of power from the engine.
It keeps the tyres from becoming warm while driving.
✓ It helps maintain grip and move water away from the tyre.
It prevents tyres from losing air pressure.

Tyre tread helps the vehicle grip the road and disperse water. Worn tread increases the risk of skidding and aquaplaning, especially in wet conditions.

Tread grooves on a vehicle tyre
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if your headlights fail while driving at night?

402. What should you do if your headlights fail while driving at night?

Follow another vehicle closely for visibility.
✓ Reduce speed and stop safely using any remaining lights or hazard lights.
Stop immediately in the traffic lane.
Continue slowly if the road is well lit.

Without effective headlights, you may not see hazards and other road users may not see you. Stop in a safe location as soon as possible.

Vehicle with failed headlights at night
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How can strong crosswinds affect a vehicle towing a trailer?

403. How can strong crosswinds affect a vehicle towing a trailer?

They affect only the towing vehicle, not the trailer.
They improve tyre grip on exposed roads.
They matter only when the trailer is empty.
✓ They can push the trailer sideways and reduce stability.

Trailers have large side surfaces and may be affected strongly by wind, especially on bridges and exposed roads.

Vehicle and trailer exposed to crosswinds
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you leave extra space when passing cyclists in strong winds?

404. Why should you leave extra space when passing cyclists in strong winds?

✓ They may be blown sideways unexpectedly.
Cyclists always ride more slowly in strong winds.
Cyclists must stop when a vehicle passes them.
Strong wind makes bicycle brakes less effective.

Strong gusts can affect cyclists' balance and direction. Extra passing space reduces the risk of a collision.

Vehicle passing a cyclist in windy conditions
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What word is commonly shown on give-way signs in United States?

405. What word is commonly shown on give-way signs in United States?

STOP.
PARE.
✓ YIELD.
GIVE WAY.

Give-way signs in United States commonly display the word YIELD.

Wording used on give-way and yield signs
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Which road markings should you follow through roadworks?

406. Which road markings should you follow through roadworks?

Follow the old permanent markings if they are still visible.
✓ The temporary markings that show the current traffic route.
Ignore markings and follow only the vehicle ahead.
Use whichever markings give you the shortest route.

Temporary road markings may replace the normal lane layout during roadworks. Follow the markings and signs that currently guide traffic.

Temporary road markings through a roadworks area
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should cyclists do when cycling downhill?

407. What should cyclists do when cycling downhill?

Use only one brake to reduce the risk of skidding.
✓ Control your speed and keep both hands ready to brake.
Look only at the road directly in front of you.
Let the bicycle gain speed while the road ahead is clear.

Higher speed increases stopping distance and reduces reaction time. Maintain a speed that allows you to stop safely.

Cyclist riding down a hill
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Should the side stand be fully raised before riding a motorcycle?

408. Should the side stand be fully raised before riding a motorcycle?

No, it only needs to be raised on motorways.
No, it can remain down when riding slowly.
✓ Yes, a lowered stand could catch the road and affect control.
No, the stand helps stabilise the motorcycle while moving.

The side stand should be fully raised before riding. If it remains down, it may strike the road surface, particularly when turning, and could cause the rider to lose control.

Motorcycle side stand and pre-ride checks
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you leave a much larger following distance on an icy road?

409. Why should you leave a much larger following distance on an icy road?

To make the headlights work more effectively.
To prevent ice from forming on the windscreen.
✓ Because stopping distances can be much longer.
To give the engine more time to warm up.

Tyres have much less grip on ice, so braking takes longer. Extra distance gives you more time to slow down safely.

Following distance between vehicles on an icy road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does the SET function of cruise control normally do?

410. What does the SET function of cruise control normally do?

Applies the brakes automatically.
Returns to a previously stored speed.
✓ Stores the current speed as the cruising speed.
Switches cruise control off.

The SET function normally stores the vehicle's current speed as the cruise-control speed. Use it only when the road, traffic, and driving conditions are suitable.

SET button for storing a cruising speed
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if exhaust fumes begin entering the car?

411. What should you do if exhaust fumes begin entering the car?

Switch the ventilation to recirculation and keep driving.
Ignore the fumes if no warning lights appear.
✓ Open the windows, stop safely, leave the vehicle, and seek assistance.
Open the windows and continue to your destination.

Exhaust gases may contain carbon monoxide, which is poisonous and may not be visible. The exhaust system should be inspected before the vehicle is used again.

Vehicle exhaust fumes and cabin ventilation
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control symbol indicate?

412. What does this vehicle-control symbol indicate?

Window lock.
Boot release.
✓ Child safety lock.
Central door locking.

This control activates the child safety lock. It helps prevent a rear door from being opened from inside the vehicle, depending on the vehicle and system design.

Child safety lock control and symbol
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if a direction indicator does not cancel after a turn?

413. What should you do if a direction indicator does not cancel after a turn?

✓ Return the indicator control to its neutral position.
Press the horn.
Switch on the hazard warning lights.
Leave it flashing until the next turn.

Direction indicators often cancel automatically after a turn, but if an indicator remains on, return the indicator control to its neutral position so you do not mislead other road users.

Returning the indicator stalk to its neutral position
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if you have taken drugs that may impair your driving?

414. What should you do if you have taken drugs that may impair your driving?

Wait until you feel more confident.
✓ Do not drive.
Drink coffee before driving.
Drive only on familiar roads.

Drugs can impair judgement, coordination, concentration, and reaction time. Their effects can be unpredictable and may continue after you feel that the main effects have passed. Do not drive while impaired.

Drug impairment and the decision not to drive
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
It is safer to drive faster than the speed limit when overtaking.

415. It is safer to drive faster than the speed limit when overtaking.

✓ False.
True.

You must still drive safely and obey traffic laws. Speeding increases risk and is not automatically justified by overtaking.

Vehicle overtaking another road user
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
When should you select R (Reverse) in an automatic vehicle?

416. When should you select R (Reverse) in an automatic vehicle?

Whenever you want to reduce speed.
✓ After the vehicle has come to a complete stop.
While the vehicle is still moving forward slowly.
Before pressing the brake pedal.

Select R (Reverse) only after the vehicle has come to a complete stop. Selecting Reverse while the vehicle is still moving forward can damage the transmission.

Selecting Reverse in a stationary automatic vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should cyclists ride when travelling in a group?

417. How should cyclists ride when travelling in a group?

Ride side by side even when traffic cannot pass safely.
Keep the same speed even when gaps become unsafe.
Follow the cyclist ahead without checking traffic yourself.
✓ Predictably, with safe gaps and clear communication.

Safe spacing and communication help group members respond to braking, turns, obstacles, and changing traffic conditions.

Group of cyclists riding along a road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do when traffic lights are not working?

418. What should you do when traffic lights are not working?

✓ Proceed carefully and follow signs or priority rules.
Follow the vehicle ahead through the junction.
Wait for another driver to enter first, then follow.
Proceed if the junction appears clear.

If traffic lights are not working, slow down, observe carefully, and follow signs, road markings, or local priority rules.

Junction with traffic lights out of operation
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

419. What does this dashboard symbol indicate?

Brake warning.
✓ Hazard warning lights.
Direction indicators.
Emergency braking.

This symbol indicates the hazard warning lights. When activated, all direction indicators flash simultaneously to warn other road users of a hazard or unusual situation.

Hazard warning light symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Who normally has priority when you enter a motorway from an entry lane?

420. Who normally has priority when you enter a motorway from an entry lane?

✓ Traffic already travelling on the motorway.
Traffic entering from the entry lane.
The vehicle closest to the end of the entry lane.
Whichever vehicle reaches the merge point first.

You must adjust your speed and find a safe gap without forcing motorway traffic to brake or change direction.

Vehicle entering beside traffic already on a motorway
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How can unnecessary weight affect a vehicle's energy use?

421. How can unnecessary weight affect a vehicle's energy use?

It makes the vehicle easier to accelerate.
It improves braking efficiency.
✓ It can increase the energy needed to move the vehicle.
It always reduces fuel consumption.

Extra weight generally requires more energy when accelerating and climbing. Removing unnecessary heavy items can help reduce fuel or energy consumption while keeping all essential equipment in the vehicle.

Extra luggage adding weight to a vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you check after fitting a child restraint?

422. What should you check after fitting a child restraint?

That the restraint can move freely on the seat.
✓ That it is securely installed and correctly fitted.
That the restraint is tilted as far back as possible.
That the child can easily loosen the harness.

A child restraint should be installed securely and used according to the manufacturer's instructions. Check that the seat is firmly attached, the belt or ISOFIX connection is correct, and the child is restrained properly before driving.

Checking the installation of a child car seat
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you check before beginning a journey in severe winter weather?

423. What should you check before beginning a journey in severe winter weather?

Only whether the main roads have been cleared.
✓ The weather, road conditions, tyres, fuel or charge, and emergency supplies.
Nothing extra if the vehicle has winter tyres.
Check whether other vehicles are using the roads.

Check whether the journey is necessary and prepare for delays or changing conditions. Suitable tyres, sufficient fuel or charge, warm clothing, and basic emergency supplies may be important.

Preparing a vehicle for a winter journey
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How can a heavy load affect stopping distance?

424. How can a heavy load affect stopping distance?

It makes the brakes respond more quickly.
✓ It can increase the distance needed to stop.
It always shortens the stopping distance.
It reduces the driver's reaction time.

A heavily loaded vehicle has more mass and may require additional distance to slow down or stop safely.

Loaded vehicle and the space needed for braking
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do with a manual parking brake before driving away?

425. What should you do with a manual parking brake before driving away?

Leave it partly applied.
Pull it up further.
✓ Release it fully.
Apply it only after moving off.

The manual parking brake should be released fully before driving away. Driving with it partly applied can cause unnecessary brake wear and overheating.

Releasing a manual handbrake before driving away
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you never leave a petrol or diesel engine running in an enclosed space?

426. Why should you never leave a petrol or diesel engine running in an enclosed space?

The battery can become overcharged.
The tyres can lose pressure more quickly.
The cooling system can stop working.
✓ Dangerous carbon monoxide can build up.

Exhaust gases from petrol and diesel engines can contain carbon monoxide, a poisonous gas that can build up quickly in an enclosed or poorly ventilated space. Never leave the engine running inside a closed garage or similar area.

Running vehicle engine in an enclosed space
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if a motorcycle's drive chain is too loose?

427. What should you do if a motorcycle's drive chain is too loose?

Lubricate it and ignore the loose tension.
✓ Adjust it correctly or have it checked before riding.
Tighten it as much as possible.
Keep riding if the motorcycle still moves normally.

A loose drive chain can affect power transmission, damage components, or come off the sprockets. The chain should have the correct tension and lubrication specified by the motorcycle manufacturer. A chain that is too tight can also cause damage.

Loose drive chain on a motorcycle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why must luggage or other objects not obstruct the driver's view?

428. Why must luggage or other objects not obstruct the driver's view?

They can make the steering heavier.
They can reduce the brightness of the headlights.
✓ They can hide hazards and reduce the driver's ability to see safely.
They can increase the vehicle's braking distance.

The driver must have a clear view of the road and surroundings. Luggage, decorations, or other objects that obstruct the windscreen, windows, or mirrors can hide pedestrians, cyclists, vehicles, signs, or other hazards.

Luggage obstructing the driver's view
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you follow the manufacturer's service schedule?

429. Why should you follow the manufacturer's service schedule?

It means routine checks between services are unnecessary.
✓ Regular servicing can identify wear and maintain safety and reliability.
It allows vehicle problems to be ignored until the next service.
It guarantees that no faults will develop between services.

Scheduled servicing helps ensure that brakes, tyres, fluids, filters, steering, suspension, and other important systems are checked and maintained before faults become more serious.

Vehicle maintenance following a servicing schedule
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if an EV charging connector will not release from the vehicle?

430. What should you do if an EV charging connector will not release from the vehicle?

Drive forwards slowly until the connector releases.
Pull the connector out as hard as possible.
✓ Stop the charging session, unlock the vehicle, and follow the instructions.
Use a tool to prise the connector from the charging port.

Charging connectors may remain locked while charging or until the vehicle is unlocked. Stop the charging session and follow the vehicle or charger's release procedure. Never force the connector; if it remains stuck, seek appropriate assistance.

Charging connector attached to an electric vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why can main-beam headlights make driving in fog more difficult?

431. Why can main-beam headlights make driving in fog more difficult?

The brighter light makes the windscreen mist more quickly.
Main beam makes interior lights less effective.
✓ The light can reflect off fog droplets and reduce visibility.
Main beam reduces the effectiveness of the fog lights.

Main beam can reflect back from fog and create glare, making it harder to see the road ahead.

Headlight glare reflected by fog
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should the head restraint be adjusted correctly?

432. Why should the head restraint be adjusted correctly?

To make the seat belt tighter.
✓ To reduce the risk of neck injury in a collision.
To support the lower back.
To improve rear visibility.

A correctly adjusted head restraint helps support the head and can reduce the risk of neck injury, especially in a rear-end collision. The top of the restraint should normally be level with the top of the head.

Adjusting a vehicle seat's head restraint
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid removing the coolant cap while the engine is hot?

433. Why should you avoid removing the coolant cap while the engine is hot?

The thermostat may become damaged.
Opening it can reduce the engine oil pressure.
✓ Pressurised hot coolant may escape and cause serious burns.
The coolant level may become harder to read.

A hot cooling system may remain under pressure. Allow the engine to cool and follow the manufacturer's instructions before checking or adding coolant.

Coolant cap and the risk of hot pressurised coolant
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How can a roof load affect vehicle handling?

434. How can a roof load affect vehicle handling?

It makes the vehicle more stable in bends.
It lowers the vehicle's centre of gravity.
✓ It can raise the centre of gravity and reduce stability.
It affects only fuel consumption, not handling.

Weight carried high on the vehicle can increase body movement and make sudden steering or cornering less stable.

Vehicle carrying a raised roof load
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What word is commonly shown on STOP signs in United States?

435. What word is commonly shown on STOP signs in United States?

✓ STOP.
DUR.
PARE.
ALTO.

In United States, STOP signs commonly display the word STOP.

Different wording used on stop signs
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do when approaching a tunnel?

436. What should you do when approaching a tunnel?

Stop and wait until the tunnel is clear.
Increase speed to spend less time inside.
Drive closer to the vehicle ahead for guidance.
✓ Use the correct lights and keep a safe distance.

When entering a tunnel, use the correct lights, keep enough distance, and stay alert for slower traffic.

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

437. What does this dashboard symbol indicate?

✓ Low windscreen washer fluid.
Low coolant level.
Windscreen demister active.
Engine-temperature warning.

This symbol indicates that the windscreen washer fluid level is low. Refill the washer-fluid reservoir with suitable fluid when possible.

Low washer-fluid warning symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before overtaking a slow-moving vehicle?

438. What should you do before overtaking a slow-moving vehicle?

Signal first and then check whether there is enough space.
✓ Check that the road ahead is clear and that overtaking is safe.
Move closer before checking whether the road ahead is clear.
Use your horn to make the driver move aside.

Before overtaking, make sure you have enough visibility, space, and time. Signal clearly before moving out, do not exceed the speed limit, and never overtake if the road ahead is not clear.

Vehicle preparing to pass slow-moving traffic
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

439. What does this dashboard symbol indicate?

✓ Front windscreen demister.
Windscreen washer.
Rear window demister.
Air recirculation.

This symbol indicates the front windscreen demister. It directs airflow towards the windscreen to help clear condensation, mist or frost and restore a clear view.

Front windscreen demister symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if an emergency vehicle approaches with lights or siren on?

440. What should you do if an emergency vehicle approaches with lights or siren on?

✓ Stay calm and make room safely.
Stop immediately wherever you are.
Speed up so the vehicle can follow you.
Move aside without checking surrounding traffic.

When an emergency vehicle uses lights or siren, check your surroundings and make room safely without sudden or dangerous movements.

Emergency vehicle approaching with warning lights flashing
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Which colour combination is commonly used for warning signs in United States?

441. Which colour combination is commonly used for warning signs in United States?

✓ Black border with yellow background.
Red border with white background.
Blue border with white background.
Red border with yellow background.

Most warning signs in United States have a black border with a yellow background.

Colour combinations used for road warning signs
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
When should you fasten your seat belt?

442. When should you fasten your seat belt?

Only when driving at high speed.
Only on long journeys.
✓ Before the vehicle starts moving.
After joining traffic.

Fasten your seat belt before the vehicle starts moving and keep it fastened throughout the journey. Make sure your passengers are also safely seated and properly restrained.

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

443. What does this vehicle-control symbol indicate?

Air recirculation.
✓ Cabin fan speed.
Seat heating.
Air conditioning.

This control adjusts the cabin ventilation fan speed. Increasing the setting moves more air through the vehicle's ventilation and climate-control system.

Control for adjusting the cabin fan speed
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
When should a passenger get on or off a motorcycle?

444. When should a passenger get on or off a motorcycle?

As soon as the engine has been started.
While the motorcycle is moving slowly.
✓ When the motorcycle is stationary and the rider is ready.
Whenever the passenger feels ready.

A passenger getting on or off can shift the motorcycle's balance suddenly. The motorcycle should be stationary and stable, and the passenger should wait until the rider is ready and prepared to support the extra movement.

Passenger getting onto a stationary motorcycle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before a long journey to reduce the risk of driver fatigue?

445. What should you do before a long journey to reduce the risk of driver fatigue?

✓ Get enough sleep before starting the journey.
Drink several energy drinks before leaving.
Plan to drive through the night.
Keep the cabin as warm as possible.

Getting enough sleep before a long journey helps reduce the risk of driver fatigue. Plan breaks in advance and avoid starting a long drive when you are already tired.

Rest and preparation before a long drive
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Which language is commonly used on text-based road signs in United States?

446. Which language is commonly used on text-based road signs in United States?

German.
Spanish.
✓ English.
French.

Text-based road signs in United States commonly use English.

Road signs with English wording
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if your vehicle begins to aquaplane?

447. What should you do if your vehicle begins to aquaplane?

✓ Ease off the accelerator and keep steering gently.
Accelerate to push through the water.
Change lanes immediately to find a drier surface.
Brake firmly to force the tyres back onto the road.

Aquaplaning happens when the tyres lose contact with the road surface. Ease off the accelerator, avoid sudden movements, and wait for grip to return.

Vehicle losing tyre contact on a water-covered road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should you normally hold the steering wheel while driving?

448. How should you normally hold the steering wheel while driving?

With one hand at the top of the wheel.
With both hands together at the bottom.
✓ With both hands in a balanced position.
With one hand resting on the gear lever.

Hold the steering wheel with both hands in a balanced position so that you can steer smoothly and react quickly. A position around nine and three o'clock generally provides good control.

Driver holding the steering wheel with both hands
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What is the purpose of the manual parking brake?

449. What is the purpose of the manual parking brake?

✓ To help keep the vehicle stationary when parked.
To select reverse gear.
To slow the vehicle during normal driving.
To disengage the clutch.

The manual parking brake helps keep the vehicle stationary when parked. It is normally applied by pulling up the handbrake lever and released before driving away.

Manual handbrake lever in a vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should the interior rear-view mirror be adjusted?

450. How should the interior rear-view mirror be adjusted?

✓ To give a clear view through the rear window.
To show mainly the rear seats.
To show the driver's face.
To point towards the left door mirror.

Adjust the interior rear-view mirror before driving so that you have a clear view through the rear window without needing to move your head significantly.

Adjusting the interior rear-view mirror
AI-generated by Traffic-rules.com • WCIT • CC BY-SA