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QuizTraffic rulesUnited Kingdom

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 Kingdom
True/false 17 United Kingdom 32 Car controls 109 Dashboard lights 40 Priority rules 9 Pedestrians 19 Cyclists 20 Show all 599
What should happen after an airbag has deployed?

301. What should happen after an airbag has deployed?

The airbag can be reused if it is not torn.
✓ The restraint system should be professionally inspected and repaired.
The airbag can be folded back into the dashboard.
Only the airbag warning light needs to be reset.

A deployed airbag is a single-use safety component. After deployment, the restraint system should be professionally inspected and the airbag and any other affected components replaced or repaired as required before the system is relied upon again.

Deployed airbag inside a vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

302. What does this dashboard symbol indicate?

Low tyre pressure.
✓ A general warning requiring attention.
A brake-system fault.
An engine-management fault.

This is a general or master warning symbol. It indicates that the vehicle has detected a condition requiring attention and is often accompanied by a message or another warning on the instrument display.

General warning symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why is it important to use bicycle lights at night?

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

They give cyclists priority over other traffic.
They make reflective clothing unnecessary.
✓ They help you see and help others notice you.
They make the bicycle easier to control.

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
Which foot normally operates the brake and accelerator in a manual vehicle?

304. Which foot normally operates the brake and accelerator in a manual vehicle?

The left foot.
The left foot for the brake and right foot for the accelerator.
✓ The right foot.
Either foot.

In a manual vehicle, the right foot normally operates both the brake and accelerator pedals, while the left foot operates the clutch.

Pedal arrangement and foot controls in a manual vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

305. What does this dashboard symbol indicate?

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

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 if the pedestrian light is red?

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

Cross if nearby vehicles appear to have stopped.
Start crossing if the signal is about to change.
✓ Wait until it turns green.
Cross if there is a large enough gap in traffic.

A red pedestrian signal means you should wait before crossing.

Red pedestrian signal at a crossing
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if another vehicle is tailgating you?

307. What should you do if another vehicle is tailgating you?

Move toward the centre to discourage them from passing.
✓ Stay calm and increase your safety margin ahead.
Tap the brakes to make them increase their distance.
Reduce the gap ahead so they cannot move into it.

If someone follows too closely, avoid sudden actions. Keeping more space in front gives you more time to brake gently if needed. If it is safe, allow the tailgating vehicle to pass.

Following vehicle visible close behind
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if your brakes feel less effective after driving through water?

308. What should you do if your brakes feel less effective after driving through water?

✓ Drive carefully and test them gently when safe.
Ignore it if the vehicle still stops.
Use only the parking brake until they dry.
Brake hard several times to dry them quickly.

Water can reduce braking performance. After driving through water, check the brakes gently when it is safe to do so.

Checking braking response after driving through water
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before turning across a cycle lane?

309. What should you do before turning across a cycle lane?

Ignore the cycle lane if you are signalling.
✓ Check mirrors and blind spots carefully for cyclists.
Turn quickly before cyclists reach the junction.
Enter the cycle lane without checking behind.

Cyclists may be beside or behind you when you turn. Check mirrors and blind spots, signal clearly, and turn only when it is safe.

Vehicle preparing to turn across a cycle lane
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should cyclists do when an emergency vehicle with lights and siren approaches?

310. What should cyclists do when an emergency vehicle with lights and siren approaches?

Keep riding normally and let the driver find a way past.
Move aside quickly without checking around you.
Follow closely behind it once it passes.
✓ Stay alert and move to a safe position without obstructing it.

Emergency vehicles need a clear route. Move predictably and stop only where doing so is safe.

Cyclist near an approaching emergency vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid sudden braking when it is not necessary?

311. Why should you avoid sudden braking when it is not necessary?

It prevents the brake lights from working properly.
✓ Vehicles behind may not have time to react.
It makes the brakes less effective afterwards.
It makes the steering less responsive afterwards.

Sudden braking can surprise drivers behind you and increase the risk of a rear-end collision.

Following traffic and the risk of sudden braking
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you look well ahead while driving?

312. Why should you look well ahead while driving?

To follow the vehicle ahead more closely.
To concentrate only on traffic in your lane.
To maintain the same speed in every situation.
✓ To identify developing hazards early and gain more time to react.

Looking well ahead helps you identify developing hazards early, such as slowing traffic, pedestrians, junctions, or changing road conditions. Earlier detection gives you more time to assess the situation and respond smoothly and safely.

Driver observing the road and traffic ahead
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How can you check that a manual gearbox is in neutral?

313. How can you check that a manual gearbox is in neutral?

✓ Move the gear lever gently from side to side.
Pull up the parking brake.
Turn the steering wheel.
Press the accelerator pedal.

When a manual gearbox is in neutral, the gear lever can normally be moved freely from side to side across the centre of the gear pattern. Check that neutral is selected before starting the engine when appropriate.

Checking neutral with a manual gear lever
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should you use the brake pedal during emergency braking in a vehicle with ABS?

314. How should you use the brake pedal during emergency braking in a vehicle with ABS?

Release it if the pedal vibrates.
Use the parking brake instead.
Pump it rapidly.
✓ Press it firmly and keep it pressed.

During emergency braking with ABS, press the brake pedal firmly and keep it pressed. Pulsation or vibration through the pedal can be normal while ABS is operating, so do not pump or release the brake.

Firm brake-pedal pressure during emergency braking with ABS
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before joining a motorway?

315. What should you do before joining a motorway?

Signal and expect motorway traffic to make space for you.
Wait until the end of the slip road before checking for a gap.
Move onto the motorway as soon as the lane markings allow.
✓ Check your mirrors and blind spot, signal, and look for a safe gap.

Observe motorway traffic early, signal clearly, and merge only when there is a safe gap.

Driver checking motorway traffic before merging
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you check your mirrors regularly while driving?

316. Why should you check your mirrors regularly while driving?

✓ To stay aware of traffic around you.
To avoid having to check your blind spots.
To check whether passengers are comfortable.
To see whether road signs behind you have changed.

Regular mirror checks help you understand what is happening behind and beside your vehicle.

Driver checking traffic in a rear-view mirror
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid stopping in a blind spot of a large vehicle?

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

Large vehicles always have priority when changing lanes.
Stopping beside a large vehicle makes you easier to see.
✓ The driver may not be able to see you.
The driver can always see you in the mirrors.

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 is the general minimum legal tread depth for car tyres in United Kingdom?

318. What is the general minimum legal tread depth for car tyres in United Kingdom?

2.0 mm.
1.5 mm.
1.0 mm.
✓ 1.6 mm.

The general minimum legal tread depth for car tyres in United Kingdom is 1.6 mm. Higher minimums may apply to winter tyres, during winter periods or in winter conditions.

Measuring tread depth on a vehicle tyre
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why is it dangerous to drive through standing water at speed?

319. Why is it dangerous to drive through standing water at speed?

The brakes become more effective when wet.
✓ The tyres may lose contact with the road.
The water can increase tyre pressure.
The suspension becomes firmer at higher speed.

Driving too fast through water can cause aquaplaning, where the tyres lose grip and the driver may lose control.

Vehicle travelling through standing water
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Rain can reduce tyre grip and increase stopping distance.

320. Rain can reduce tyre grip and increase stopping distance.

False.
✓ True.

Wet roads reduce traction, so your vehicle may need more distance to stop safely.

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

321. How should you brake on a slippery road?

✓ Brake gently and progressively.
Use the parking brake to help slow the vehicle.
Steer sharply while braking to avoid slippery areas.
Brake harder than usual to shorten the stopping distance.

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
What should you do if you miss your motorway exit?

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

Cross the painted separation area back to the exit.
Use an emergency opening in the central reservation.
✓ Continue to the next exit.
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 should you check before starting a long journey?

323. What should you check before starting a long journey?

Only the dashboard warning lights.
Nothing if the vehicle was recently serviced.
✓ Tyres, lights, fluids, windows, mirrors, and essential equipment.
Only the tyres and fuel level.

A brief vehicle check can reveal tyre damage, low fluid levels, faulty lights, or visibility problems before they cause danger. Also confirm that any spare wheel or tyre-repair equipment is available and usable.

Vehicle safety checks before a long journey
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if exhaust fumes begin entering the car?

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

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

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
Are snow chains generally required in United Kingdom?

325. Are snow chains generally required in United Kingdom?

Yes, throughout the year.
Yes, throughout winter.
✓ No.

Snow chains are not generally required in United Kingdom, although they may be useful or required in specific conditions or locations.

Snow chains for vehicle tyres
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Which pedal is used to increase the vehicle's speed?

326. Which pedal is used to increase the vehicle's speed?

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

The accelerator pedal controls the amount of power delivered by the engine and is used to increase or maintain the vehicle's speed. It is the right-hand pedal.

Accelerator pedal in the driver's footwell
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control symbol indicate?

327. What does this vehicle-control symbol indicate?

✓ Speed limiter.
Driving mode selection.
Cruise control.
Adaptive cruise control.

The speed limiter allows the driver to set a maximum speed that the vehicle should not normally exceed while the accelerator is being used.

Vehicle speed-limiter control and symbol
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What normally happens to cruise control when you press the brake pedal?

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

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

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
How should cyclists cross railway or tram tracks?

329. How should cyclists cross railway or tram tracks?

Keep the wheels parallel with the rails while crossing.
Brake firmly while the front wheel is on the rail.
✓ Cross at a safe angle, as close to perpendicular as possible.
Follow the rails briefly before crossing them.

A bicycle wheel can become trapped in a rail groove. Crossing at a wider angle reduces this risk.

Cyclist crossing rails in the road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should a motorcyclist brake in an emergency?

330. 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 should you do about a flat tyre on a high-speed road?

331. What should you do about a flat tyre on a high-speed road?

Stop immediately and change the tyre where you are.
Repair the tyre beside the traffic lane using hazard lights.
✓ Move to a protected location if possible and call for professional recovery.
Ask passengers to help change the wheel quickly.

Changing a wheel close to high-speed traffic is extremely dangerous. Move away from traffic and use professional assistance.

Vehicle stopped with a flat tyre on a high-speed road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid selecting N while driving downhill in an automatic vehicle?

332. Why should you avoid selecting N while driving downhill in an automatic vehicle?

It automatically selects a lower gear.
It applies the parking brake.
It increases engine braking.
✓ It reduces engine braking and vehicle control.

Selecting N (Neutral) while driving downhill disconnects the engine from the driven wheels, reducing engine braking. Keep an appropriate drive or gear selected so you can maintain better control of the vehicle.

Neutral selection and downhill coasting in an automatic vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why are reversing and making a U-turn on a motorway extremely dangerous?

333. Why are reversing and making a U-turn on a motorway extremely dangerous?

Motorway cameras may not recognise the vehicle correctly.
✓ Other drivers approach quickly and do not expect traffic facing them.
The steering may become heavier while turning around.
The vehicle may use more fuel during the manoeuvre.

Motorway traffic travels at high speed. Unexpected reversing or turning can cause a severe collision.

Vehicle on a motorway hard shoulder
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should you check the engine oil level?

334. How should you check the engine oil level?

Fill the engine until oil reaches the filler opening.
Use the coolant reservoir to measure the oil level.
Add oil every time you refuel the vehicle.
✓ Follow the manufacturer's instructions with the vehicle on level ground.

Use the dipstick or electronic oil-level system as described in the owner's manual. The engine is usually switched off, and the vehicle should be standing on level ground.

Checking the engine oil level
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do when reversing with a trailer?

335. What should you do when reversing with a trailer?

Reverse quickly to keep the trailer straight.
✓ Reverse slowly and make small steering corrections.
Ask a guide to stand directly behind the trailer.
Watch only the trailer and ignore surrounding traffic.

Trailers react quickly to steering while reversing. Move slowly, observe carefully, and use a guide only from a safe visible position.

Vehicle reversing with a trailer
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you check blind spots before moving off?

336. Why should you check blind spots before moving off?

✓ A cyclist, pedestrian, or vehicle may be beside you.
To judge the speed of traffic approaching from behind.
To confirm other drivers have seen your indicator.
To make sure your mirrors are adjusted correctly.

Mirrors do not show every area around your vehicle. A blind-spot check can reveal cyclists, pedestrians, motorcyclists, or vehicles before you move off.

Driver checking a blind spot before moving off
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you reduce speed in residential areas?

337. Why should you reduce speed in residential areas?

✓ Pedestrians, cyclists, and children may be nearby.
Because residential roads are usually more slippery.
Traffic from side roads must always give way.
Parked vehicles have priority over moving traffic.

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
What should you do when meeting another vehicle on a narrow mountain road?

338. What should you do when meeting another vehicle on a narrow mountain road?

✓ Slow down and use a safe passing place if necessary.
Maintain speed and pass as closely as possible.
Drive onto the roadside without checking the surface.
Move toward the centre so the other driver gives way.

Narrow mountain roads may not provide enough space for two vehicles. Reduce speed and cooperate to pass safely.

Vehicles meeting on a narrow mountain road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should cyclists do when riding over loose gravel or road debris?

339. What should cyclists do when riding over loose gravel or road debris?

Keep the same speed as on a dry, smooth road.
Accelerate to keep the bicycle stable.
Make quick steering movements to avoid loose stones.
✓ Reduce speed and steer smoothly.

Loose material reduces tyre grip. Smooth steering and controlled speed lower the chance of losing balance.

Cyclist riding over loose gravel
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before crossing the road?

340. What should you do before crossing the road?

✓ Look for traffic in all directions.
Look only where traffic normally comes from.
Listen for vehicles instead of looking.
Cross if the nearest vehicle is slowing down.

Always check for approaching traffic from every direction before crossing.

Pedestrian checking for traffic before crossing
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should you normally hold the steering wheel while driving?

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

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

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
Why should you avoid overloading a trailer?

342. Why should you avoid overloading a trailer?

It makes the trailer easier to control.
It reduces tyre wear on the towing vehicle.
✓ It can reduce stability and place excessive strain on the vehicle.
It keeps the trailer more stable in strong winds.

Overloading can affect braking, steering, tyres, suspension, and trailer stability. Always remain within permitted limits. After loading, check that the load is secure and correctly distributed before starting your journey.

Loaded trailer and towing limits
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What is important when raising a vehicle with its jack?

343. What is important when raising a vehicle with its jack?

Raise the vehicle before applying the parking brake.
Use any solid-looking part underneath the vehicle.
✓ Use the correct jacking point and never go underneath a vehicle on a jack.
Place the jack on soft ground to prevent floor damage.

A jack can slip or fail if it is incorrectly positioned. Secure the vehicle and use additional approved supports before working underneath it.

Vehicle raised at a jacking point for a wheel change
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

344. What does this dashboard symbol indicate?

Sidelights.
Rear fog lights.
✓ Front fog lights.
Main beam.

This symbol indicates that the front fog lights are switched on. Front fog lights are designed to improve illumination close to the road in conditions of severely reduced visibility. Rules governing their use vary by country.

Front fog-light symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if someone is injured in a road collision?

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

Help them stand up and check whether they can walk.
Move them to a more comfortable position immediately.
✓ Call for help and avoid moving them unless there is immediate danger.
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 does this vehicle-control symbol indicate?

346. What does this vehicle-control symbol indicate?

✓ Steering-wheel adjustment.
Power-steering control.
Seat adjustment.
Exterior mirror adjustment.

This control adjusts the position of the steering wheel. Depending on the vehicle, the steering wheel may be moved up or down and forwards or backwards to obtain a safe and comfortable driving position.

Control for adjusting the steering-wheel position
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Which road markings should you follow through roadworks?

347. Which road markings should you follow through roadworks?

Use the markings intended for construction vehicles.
Use whichever markings give you the shortest route.
Ignore markings and follow only the vehicle ahead.
✓ The temporary markings that show the current traffic 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
Why should you make sure drivers have seen you before crossing?

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

Once a driver sees you, no further checks are needed.
A driver who sees you can always stop in time.
Making eye contact gives you priority.
✓ To reduce the risk of stepping into their path.

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
Why should you use your indicator before turning?

349. Why should you use your indicator before turning?

✓ To show other road users what you plan to do.
To show that the turn is safe to make.
To replace checking mirrors and blind spots.
To give yourself priority over other traffic.

Indicators help other drivers, cyclists, and pedestrians understand your intentions in time.

Vehicle indicator signalling an intended turn
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if your vehicle begins to aquaplane?

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

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

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