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
What should you do if your vehicle breaks down inside a road tunnel?

501. What should you do if your vehicle breaks down inside a road tunnel?

Leave the vehicle and walk along the road to find help.
Make a U-turn and drive toward the nearest exit.
Reverse toward the tunnel entrance if traffic is light.
✓ Move aside if possible, use hazard lights, and call for assistance.

If possible, stop in an emergency bay or another safe place and use the hazard lights. Contact tunnel control using an emergency telephone or other available assistance system, and follow the tunnel signs and instructions.

Broken-down vehicle inside a road tunnel
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if you are approaching an animal-drawn vehicle?

502. What should you do if you are approaching an animal-drawn vehicle?

Sound your horn so the driver notices you.
Overtake quickly before the animal changes direction.
✓ Slow down and pass carefully with plenty of space.
Flash your headlights to encourage it to move aside.

Animals can be startled by noise or sudden movement. Reduce speed, keep distance, and pass only when it is safe.

Vehicle approaching an animal-drawn vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why is a larger following distance needed at motorway speeds?

503. Why is a larger following distance needed at motorway speeds?

It prevents the tyres from becoming too warm.
It makes the vehicle easier to steer.
✓ You need more distance to react and stop safely.
It keeps the engine from working too hard.

At higher speeds, you travel farther during your reaction time and need more distance to brake. A larger gap gives you more time and space to stop safely.

Following distance between vehicles on a motorway
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if your vehicle becomes stuck on a railway crossing?

504. What should you do if your vehicle becomes stuck on a railway crossing?

✓ Get everyone out, move away, and contact the emergency services.
Try to restart the vehicle until help arrives.
Stay inside the vehicle and call for assistance.
Walk along the tracks to look for help.

Move everyone well away from the tracks. Use the crossing emergency telephone or displayed contact information where available, or contact the emergency services immediately.

Vehicle stranded on a railway crossing
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if strong winds push your vehicle sideways?

505. What should you do if strong winds push your vehicle sideways?

Brake hard immediately to stop the vehicle moving sideways.
✓ Keep calm and steer smoothly to maintain your lane.
Release the steering wheel briefly and let the vehicle settle.
Turn sharply against the direction of the wind.

Strong winds can push your vehicle off course, especially at higher speeds. Reduce speed and use smooth steering to stay in control.

Crosswind affecting a vehicle's road position
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you reduce speed in residential areas?

506. Why should you reduce speed in residential areas?

Traffic from side roads must always give way.
Parked vehicles have priority over moving traffic.
Overtaking is prohibited throughout residential areas.
✓ Pedestrians, cyclists, and children may be nearby.

Residential areas often have pedestrians, cyclists, parked vehicles, driveways, and children, and hazards may appear suddenly. Lower speed gives you more time to react and stop safely.

Vehicle travelling through a residential street
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should you brake on a slippery road?

507. How should you brake on a slippery road?

✓ Brake gently and progressively.
Brake harder than usual to shorten the stopping distance.
Steer sharply while braking to avoid slippery areas.
Apply the brakes suddenly before the tyres lose grip.

Sudden braking can cause the wheels to lose grip. Smooth, progressive braking reduces the risk of skidding.

Braking on a slippery road surface
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Which foot should normally operate the brake and accelerator in an automatic vehicle?

508. Which foot should normally operate the brake and accelerator in an automatic vehicle?

Both feet together.
✓ The right foot.
The left foot.
Either foot at the same time.

In an automatic vehicle, the right foot should normally operate both the brake and accelerator pedals. The left foot should rest on the footrest to reduce the risk of pressing both pedals at the same time.

Right-foot control of an automatic vehicle's pedals
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control symbol indicate?

509. What does this vehicle-control symbol indicate?

Interior lighting.
✓ Instrument-panel brightness.
Headlight level adjustment.
Front fog lights.

This control adjusts the brightness of the instrument panel and dashboard illumination, allowing the driver to reduce or increase the lighting level.

Control for adjusting instrument-panel brightness
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What can slow engine cranking or dim lights indicate?

510. What can slow engine cranking or dim lights indicate?

✓ A weak battery or charging-system problem.
A wheel-alignment problem.
A blocked air filter.
Worn brake pads.

Slow starting, dim lights, or repeated battery warnings can indicate a weak battery, poor electrical connection, or a fault in the charging system.

Vehicle battery and difficulty starting the engine
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you not rely only on a reversing camera?

511. Why should you not rely only on a reversing camera?

It removes the need to look around before reversing.
It shows every blind spot around the vehicle.
It guarantees that the path behind is clear.
✓ It may not show everything around the vehicle.

Reversing cameras can help, but they may have blind spots and limited coverage. Always check your mirrors and surroundings, look around where possible, and reverse slowly.

Reversing-camera display inside a vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What normally happens to cruise control when you press the brake pedal?

512. What normally happens to cruise control when you press the brake pedal?

The accelerator pedal locks in position.
✓ Cruise control is cancelled or temporarily disengaged.
The selected speed increases.
The parking brake is applied.

Pressing the brake pedal normally cancels or temporarily disengages cruise control, returning speed control to the driver.

Brake-pedal operation to disengage cruise control
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do when the road is covered with snow or ice?

513. What should you do when the road is covered with snow or ice?

✓ Reduce speed, increase following distance, and drive gently.
Drive at the normal speed limit if the road looks clear.
Use quick steering movements if the vehicle starts to slide.
Brake firmly in bends to keep control.

Snow and ice greatly reduce tyre grip. Lower speed, extra distance, and gentle steering, braking, and acceleration help maintain control.

Vehicle travelling on a snow-covered road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
You should follow the vehicle in front as closely as possible in traffic.

514. You should follow the vehicle in front as closely as possible in traffic.

✓ False.
True.

You should keep a safe following distance so you have enough time to react if traffic slows or stops suddenly.

Vehicle following closely behind another vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid sudden steering movements on snow or ice?

515. Why should you avoid sudden steering movements on snow or ice?

They make the tyres wear more quickly.
They reduce the effectiveness of the headlights.
✓ They can cause the tyres to lose grip and the vehicle to skid.
They increase fuel consumption.

Abrupt steering can overwhelm the limited grip available on a slippery surface. Steering smoothly helps keep the vehicle stable.

Steering a vehicle on a snowy road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control symbol indicate?

516. What does this vehicle-control symbol indicate?

✓ Exterior mirror folding.
Electric window control.
Exterior mirror adjustment.
Seat adjustment.

This control folds or unfolds the vehicle's exterior mirrors. It is useful when parking in narrow spaces or when leaving the vehicle parked.

Control for folding the exterior mirrors
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if you are unsure who has priority at a junction?

517. What should you do if you are unsure who has priority at a junction?

✓ Slow down and proceed only when it is safe.
Proceed if the other driver appears to be slowing down.
Enter slowly so the other driver has time to react.
Rely on eye contact and enter the junction first.

If priority is unclear, reduce speed, observe carefully, and avoid entering the junction until you are sure it is safe.

Vehicles approaching a junction with uncertain priority
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you normally select before leaving an automatic vehicle parked?

518. What should you normally select before leaving an automatic vehicle parked?

R (Reverse).
D (Drive).
N (Neutral).
✓ P (Park).

Select P (Park) before leaving an automatic vehicle parked. Park locks the transmission to help prevent the vehicle from rolling; the parking brake should also be applied.

Park position on an automatic gear selector
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should a passenger normally sit on a motorcycle?

519. How should a passenger normally sit on a motorcycle?

Sideways so they can get off more easily.
With one foot hanging down when travelling slowly.
✓ Securely on the passenger seat with both feet on the footrests.
Standing on the footrests when the road is uneven.

A motorcycle passenger should sit securely on the designated passenger seat, keep both feet on the footrests and avoid sudden movements that could affect the motorcycle's balance and stability.

Passenger seated on a motorcycle with feet on the footrests
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

520. What does this dashboard symbol indicate?

Electronic stability control.
✓ Parking assistance.
Adaptive cruise control.
Automatic emergency braking.

This symbol relates to the vehicle's parking assistance system. Depending on the vehicle, the system may use sensors or cameras to detect obstacles and assist the driver while parking.

Parking-assistance symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if your lane is blocked by an obstacle?

521. What should you do if your lane is blocked by an obstacle?

✓ Slow down, check carefully, and give way if needed.
Move around it because the obstacle gives you priority.
Follow another vehicle around it without checking yourself.
Signal and expect oncoming traffic to make room.

If your lane is blocked, reduce speed, check mirrors and oncoming traffic, and only move around the obstacle when it is safe.

Obstacle blocking a vehicle's lane
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do with a child restraint after a collision?

522. What should you do with a child restraint after a collision?

Repair damaged parts yourself.
Keep using it if no damage is visible.
✓ Follow the manufacturer's instructions about inspection or replacement.
Use it normally after tightening the straps.

A child restraint may be damaged in a collision even when the damage is not obvious. Follow the manufacturer's instructions, as the restraint may need to be inspected or replaced before it is used again.

Child car seat requiring inspection after a collision
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do when temporary traffic lights show red?

523. What should you do when temporary traffic lights show red?

✓ Stop before the signal or temporary stop line.
Only permanent traffic lights are valid.
Follow the vehicle ahead through the signal.
Continue if the road ahead appears clear.

Temporary traffic signals must be obeyed like permanent signals. Stop and wait until you are permitted to continue.

Red signal on temporary roadworks traffic lights
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if a gear does not engage easily in a manual vehicle?

524. What should you do if a gear does not engage easily in a manual vehicle?

Press the accelerator fully.
✓ Avoid forcing the gear lever.
Release the clutch suddenly.
Push the lever harder until the gear engages.

If a gear does not engage easily, do not force the gear lever. Make sure the clutch is fully pressed and the vehicle's speed is suitable for the gear before trying again.

Operating a manual gear lever without forcing it
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why is it important to use bicycle lights at night?

525. Why is it important to use bicycle lights at night?

✓ They help you see and help others notice you.
They give cyclists priority over other traffic.
They make the bicycle easier to control.
They are needed only on roads without street lighting.

Front and rear lights improve visibility and make it easier for drivers, cyclists, and pedestrians to detect you.

Bicycle lights used when riding at night
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should the driver's floor mat be properly secured?

526. Why should the driver's floor mat be properly secured?

✓ It could slide forwards and interfere with the pedals.
It could make the steering wheel harder to turn.
It could cause the tyres to lose pressure.
It could prevent the seat belt from locking.

A loose or incorrectly fitted floor mat can move into the pedal area and interfere with the accelerator, brake, or clutch. Make sure the driver's floor mat is correctly fitted, secured, and does not obstruct any pedal.

Driver's floor mat near the pedals
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Where should you change a wheel after a puncture?

527. Where should you change a wheel after a puncture?

Where the puncture occurred, as long as the hazard lights are on.
✓ On firm, level ground well away from moving traffic.
On soft ground if the jack appears stable.
On a slight slope if the parking brake is applied.

The vehicle must be stable and protected from traffic. Apply the parking brake and follow the manufacturer's wheel-changing instructions.

Wheel change on firm ground away from traffic
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do when approaching a narrow road with oncoming traffic?

528. What should you do when approaching a narrow road with oncoming traffic?

Move closer to the road edge without reducing speed.
✓ Slow down and give space when needed.
Expect the oncoming driver to make room for you.
Maintain your speed if there appears to be enough room.

On narrow roads, reduce speed and be prepared to stop or use a suitable passing place. Leave enough space for the oncoming vehicle and avoid forcing either vehicle into an unsafe position.

Oncoming vehicles approaching a narrow stretch of road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if someone is injured in a road collision?

529. What should you do if someone is injured in a road collision?

Move them to a more comfortable position immediately.
✓ Call for help and avoid moving them unless there is immediate danger.
Help them stand up and check whether they can walk.
Remove a motorcyclist's helmet to check for injuries.

Moving an injured person can worsen spinal or other injuries. Keep them calm, protect them from further danger, and provide first aid only within your level of training.

Assistance for an injured person after a road collision
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What can happen if you use the brakes continuously on a long descent?

530. What can happen if you use the brakes continuously on a long descent?

✓ The brakes may overheat and become less effective.
The engine may automatically slow the vehicle.
The brakes may become more effective as they heat up.
Nothing, if the brake fluid level is correct.

Continuous braking can cause the brakes to overheat and fade, reducing braking performance. Use a lower gear to help control speed with engine braking.

Vehicle braking during a long descent
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid driving through deep water?

531. Why should you avoid driving through deep water?

Increase speed to maintain full control through the water.
Driving through deep water is always prohibited.
✓ It can damage your vehicle or make you lose control.
Deep water makes the engine use too much oil.

Deep water can damage the engine, reduce braking ability, hide hazards, or cause the vehicle to lose grip. Reduce speed, assess the depth and conditions carefully, and avoid entering the water if you are unsure it is safe. If necessary, stop and use another route.

Deep water covering part of a road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
You may ignore a stop sign if the road looks empty.

532. You may ignore a stop sign if the road looks empty.

True.
✓ False.

A stop sign means you must come to a complete stop, even if no other traffic is visible.

Stop sign at a quiet junction
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do when a bus signals to pull away from a bus stop?

533. What should you do when a bus signals to pull away from a bus stop?

✓ Slow down and be prepared to let it move out when safe.
Sound your horn so the bus waits for you.
Ignore the signal until the bus starts moving.
Accelerate and pass before the bus moves out.

Buses may pull away after picking up passengers. Slow down, check the traffic situation, and allow space when it is safe.

Bus signalling to pull away from a stop
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control symbol indicate?

534. What does this vehicle-control symbol indicate?

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

This symbol indicates the windscreen washer. Operating the control sprays washer fluid onto the windscreen and normally activates the wipers to help clean the glass.

Windscreen-washer control and spray symbol
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What can selecting a lower gear provide in a manual vehicle?

535. What can selecting a lower gear provide in a manual vehicle?

Higher tyre pressure.
Automatic parking-brake operation.
A shorter steering ratio.
✓ Greater engine braking.

Selecting a suitable lower gear can increase engine braking, helping the vehicle slow or control its speed without relying entirely on the brakes.

Manual gear selection for engine braking
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid stopping in a blind spot of a large vehicle?

536. Why should you avoid stopping in a blind spot of a large vehicle?

Stopping beside a large vehicle makes you easier to see.
The driver can always see you in the mirrors.
Blind spots only matter when a vehicle is reversing.
✓ The driver may not be able to see you.

Large vehicles have bigger blind spots. If you stop where the driver cannot see you, you may be at risk when the vehicle moves or turns.

Vehicle positioned in a large vehicle's blind spot
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control symbol indicate?

537. What does this vehicle-control symbol indicate?

Mirror adjustment.
✓ Seat adjustment.
Lumbar support.
Seat heating.

This control adjusts the position of the seat. Depending on the vehicle, it may move the seat forwards or backwards, raise or lower it, or change the backrest angle.

Control for adjusting the driver's seat
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid placing objects on or over an airbag cover?

538. Why should you avoid placing objects on or over an airbag cover?

They could prevent the seat belt from locking.
✓ They could interfere with deployment and become dangerous projectiles.
They could make the airbag deploy too slowly.
They could cause the airbag warning light to stay on.

Do not place or attach objects over an airbag cover or in an airbag's deployment area. They may interfere with the airbag as it inflates and could be thrown towards occupants when the airbag deploys.

Objects placed over a vehicle's airbag cover
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if your main beam could dazzle another driver?

539. What should you do if your main beam could dazzle another driver?

Move farther from the centre and keep the main beam on.
Reduce speed but leave the main beam on.
✓ Switch to dipped headlights.
Flash the main beam briefly before passing.

Main beam can dazzle other road users and reduce their visibility. Switch to dipped headlights whenever your main beam could dazzle another driver.

Headlight glare affecting another road user
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you keep a safe following distance?

540. Why should you keep a safe following distance?

To make your vehicle easier to see ahead.
✓ To have enough time to stop.
To make overtaking easier.
To reduce wear on the brakes.

A safe following distance gives you enough time to react if the vehicle in front slows down or stops suddenly.

Gap between a vehicle and the traffic ahead
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should a motorcycle helmet be worn correctly and securely fastened?

541. Why should a motorcycle helmet be worn correctly and securely fastened?

To improve the rider's hearing in traffic.
To make the motorcycle easier to balance.
✓ To reduce the risk of serious head injury in a collision.
To reduce fuel consumption at higher speeds.

A correctly fitted and securely fastened motorcycle helmet helps protect the rider's head and can reduce the risk and severity of head injury in a collision or fall.

Motorcyclist wearing a securely fastened helmet
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before refuelling a petrol or diesel vehicle?

542. What should you do before refuelling a petrol or diesel vehicle?

Keep the engine idling if the vehicle is outside.
Leave the engine running to protect the battery.
✓ Switch off the engine before starting to refuel.
Increase the engine speed before removing the fuel cap.

Switch off the engine before refuelling. Fuel vapours are flammable, so avoid ignition sources and follow the safety instructions at the filling station. If fuel is spilled, do not start the vehicle until the situation has been made safe.

Vehicle at a pump before refuelling
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if your vehicle begins to skid on ice?

543. What should you do if your vehicle begins to skid on ice?

✓ Ease off the accelerator and steer smoothly in the direction you want to travel.
Accelerate sharply to regain traction.
Press the brake pedal hard and hold it.
Steer rapidly from side to side.

Avoid sudden braking or steering. Look where you want to go and use gentle controls while the tyres regain grip.

Vehicle skidding on an icy road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before driving if snow or ice covers your vehicle?

544. What should you do before driving if snow or ice covers your vehicle?

✓ Clear the windows, mirrors, lights, roof, and number plates.
Let the heater clear the ice while you drive.
Clear only the areas needed for your immediate view.
Clear only the windows and mirrors.

You need a clear view in every direction. Snow or ice left on the roof can also fall or blow onto other road users.

Clearing snow and ice from a vehicle before driving
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do with the steering wheel after completing a turn?

545. What should you do with the steering wheel after completing a turn?

Turn it quickly in the opposite direction.
✓ Guide it smoothly back towards the straight-ahead position.
Hold it in the turned position.
Release it completely and let it spin freely.

After completing a turn, guide the steering wheel smoothly back towards the straight-ahead position while maintaining control. Do not allow the wheel to spin freely through your hands.

Guiding the steering wheel back after a turn
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you check shortly after securing a load?

546. What should you check shortly after securing a load?

✓ Stop safely and check that the restraints are still tight.
Check the load only when you reach your destination.
Loosen the restraints slightly after the load has settled.
Assume the load is secure once the journey has started.

Loads and straps may settle or loosen after the journey begins. Recheck them at a safe stopping place.

Rechecking straps securing a vehicle's load
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Which control is normally used to switch between dipped and main beam headlights?

547. Which control is normally used to switch between dipped and main beam headlights?

The dashboard brightness control.
The windscreen-wiper stalk.
The hazard warning switch.
✓ The lighting stalk.

The lighting stalk is normally used to switch between dipped and main beam headlights. The exact movement varies between vehicles, so check the vehicle controls before driving.

Lighting stalk for switching between dipped and main beam
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if you miss your motorway exit?

548. What should you do if you miss your motorway exit?

Cross the painted separation area back to the exit.
✓ Continue to the next exit.
Turn around if traffic is light enough.
Move onto the shoulder and reverse carefully.

Never reverse or make a sudden manoeuvre. Continue safely and change your route at the next suitable exit.

Vehicle continuing past a motorway exit
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What is the main emergency number in United States?

549. What is the main emergency number in United States?

✓ 911.
111.
112.
000.

The main emergency number in United States is 911.

911 emergency telephone number
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you never leave a child or pet alone in a parked vehicle on a warm day?

550. Why should you never leave a child or pet alone in a parked vehicle on a warm day?

✓ The interior can heat up quickly and cause serious heat illness.
The alarm system may activate unexpectedly.
The windows may become difficult to open.
The vehicle battery may discharge more quickly.

The inside of a parked vehicle can heat up rapidly, even when the outside temperature does not feel extreme. Children and animals are particularly vulnerable to overheating and heatstroke. Leaving a window partly open does not make the vehicle safe.

Parked vehicle and the danger of interior heat
AI-generated by Traffic-rules.com • WCIT • CC BY-SA