QuizTraffic rulesBrazil

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.


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

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

The cooling system can stop working.
The engine can lose oil pressure.
✓ Dangerous carbon monoxide can build up.
The tyres can lose pressure more quickly.

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
Why are tyre condition and pressure especially important on a motorcycle?

302. Why are tyre condition and pressure especially important on a motorcycle?

They affect only comfort at high speed.
✓ They directly affect grip, stability, and braking.
They mainly affect the engine temperature.
They matter only when carrying a passenger.

A motorcycle relies on a relatively small area of tyre contact with the road. Correct tyre pressure, tread and condition are important for grip, steering, stability and braking. Check the tyres regularly and follow the manufacturer's recommended pressures.

Checking the condition of a motorcycle tyre
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid selecting N while driving downhill in an automatic vehicle?

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

It increases engine braking.
It automatically selects a lower gear.
It applies the parking brake.
✓ 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
What should you do if a red warning light appears with an unusual noise?

304. What should you do if a red warning light appears with an unusual noise?

Wait until the next service to have it checked.
Stop only if another warning light appears.
Ignore the noise if the warning light later goes out.
✓ Stop safely, switch off the engine, and seek assistance.

A red warning combined with an unusual noise may indicate a serious fault. Continuing could cause damage or loss of control.

Red dashboard warning requiring the driver's attention
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should a motorcyclist cross tram or railway rails?

305. How should a motorcyclist cross tram or railway rails?

✓ At a safe angle, as close to perpendicular as practical.
With the motorcycle leaning sharply.
At a very shallow angle alongside the rails.
While braking firmly on the rails.

Rails can be slippery and can catch a motorcycle tyre, especially when wet. Cross them at a sufficiently large angle, as close to perpendicular as practical, and avoid sudden braking, acceleration or steering while crossing.

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

306. How should a motorcyclist brake in an emergency?

✓ Apply both brakes firmly and progressively.
Use only the rear brake.
Steer sharply while braking hard.
Grab the front brake as suddenly as possible.

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
Why should you check your mirrors before braking?

307. Why should you check your mirrors before braking?

To decide which gear to use while slowing down.
To check whether your brake lights are working.
To check whether the road surface is slippery.
✓ To know what is happening behind you.

Checking your mirrors helps you understand what is happening behind you and anticipate how following traffic may react. In an emergency, do not delay necessary braking.

Driver checking following traffic before braking
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you never reverse or make a U-turn inside a tunnel unless directed?

308. Why should you never reverse or make a U-turn inside a tunnel unless directed?

Tunnel ventilation works only in the normal direction of travel.
✓ It can cause a serious collision with approaching traffic.
A U-turn can confuse the tunnel's traffic monitoring system.
The tunnel may be too narrow for the vehicle to turn.

Other drivers may not expect a vehicle to reverse or turn around. Only change direction when instructed by police or tunnel staff.

Vehicle manoeuvring inside a road tunnel
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if your vehicle becomes stuck on a railway crossing?

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

Walk along the tracks to look for help.
Try to restart the vehicle until help arrives.
Move everyone beside the vehicle while waiting.
✓ Get everyone out, move away, and contact the emergency services.

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
How should pets be carried safely in a vehicle?

310. How should pets be carried safely in a vehicle?

On the driver's lap if they remain calm.
Free to move around during short journeys.
Beside an open window so they can see outside.
✓ Securely restrained so they cannot distract the driver or move dangerously.

A pet moving freely inside a vehicle can distract the driver and may be thrown around during sudden braking or a collision. Use a suitable carrier, harness, barrier, or other secure restraint appropriate for the animal and vehicle.

Pet travelling inside a vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you take regular breaks during a long journey?

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

✓ To help prevent fatigue and maintain concentration.
To make the journey feel shorter.
To improve fuel quality.
To allow the engine to cool down.

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 should a motorcyclist do before entering a bend?

312. What should a motorcyclist do before entering a bend?

Accelerate before checking how sharp the bend is.
Move close to the centre of the road.
✓ Reduce speed before the bend and look through it.
Brake hard after beginning to lean.

Adjust your speed before entering the bend so you can steer smoothly and remain within a safe position. Look through the bend towards where you want to travel and be prepared for hazards that may be hidden from view.

Motorcyclist approaching a bend
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control symbol indicate?

313. What does this vehicle-control symbol indicate?

✓ Electronic parking brake.
Cruise control.
Parking assistance.
Automatic brake hold.

This control operates the electronic parking brake. Pulling or pressing the switch applies or releases the parking brake, depending on the vehicle.

Electronic parking-brake switch and symbol
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if you see smoke or fire inside a tunnel?

314. What should you do if you see smoke or fire inside a tunnel?

✓ Follow tunnel instructions and leave the tunnel if it is safe to do so.
Keep driving normally unless the tunnel is completely blocked.
Stop near the fire so you can assess the situation.
Stay inside the vehicle and wait for the smoke to clear.

If it is safe to drive out of the tunnel, do so. If you cannot continue safely, stop, switch off the engine, leave the vehicle, and use the marked emergency exits or refuge routes. Follow tunnel-control instructions.

Smoke inside a road tunnel
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does AUTO on a windscreen-wiper control normally do?

315. What does AUTO on a windscreen-wiper control normally do?

Sprays washer fluid automatically.
Runs the wipers continuously at maximum speed.
✓ Operates the wipers automatically when rain is detected.
Operates only the rear wiper.

When AUTO is selected, a rain sensor can operate the windscreen wipers automatically and adjust their operation according to the amount of moisture detected on the windscreen.

AUTO setting on the windscreen-wiper control
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if your vehicle breaks down on a busy road?

316. What should you do if your vehicle breaks down on a busy road?

Stand beside the vehicle while waiting for help.
Sound the horn continuously to warn other drivers.
✓ Move to a safe place, use hazard lights, and stay clear of traffic.
Stay close to the vehicle so other drivers can see you.

If your vehicle breaks down, make it visible and get yourself away from moving traffic. Safety comes before repairing the vehicle.

Broken-down vehicle beside a busy road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if your motorcycle helmet visor starts to fog?

317. What should you do if your motorcycle helmet visor starts to fog?

Close all helmet vents completely.
✓ Reduce speed and clear the visor safely.
Look around the side of the visor instead.
Keep riding at the same speed until it clears.

A fogged visor can seriously reduce your view of the road. Reduce speed and use the helmet's ventilation, demisting or anti-fog features where available. If you cannot restore a clear view safely, stop in a safe place before continuing.

Misted visor on a motorcycle helmet
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you check before starting a motorcycle journey?

318. What should you check before starting a motorcycle journey?

Only the tyres if the journey is long.
✓ Tyres, brakes, lights, steering, and controls.
Nothing if the motorcycle was recently serviced.
Only the fuel level and mirrors.

Before riding, carry out a basic safety check. Check the tyres, brakes, lights, steering and controls, and inspect the drive chain, belt or other drive components where applicable. Finding a problem before setting off can prevent a breakdown or loss of control.

Checking a motorcycle before a journey
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What is the purpose of the clutch pedal in a manual vehicle?

319. What is the purpose of the clutch pedal in a manual vehicle?

To slow the vehicle using the brakes.
✓ To disconnect the engine from the transmission.
To apply the parking brake.
To increase the engine speed.

Pressing the clutch pedal temporarily disconnects the engine from the transmission, allowing the driver to change gear or stop without stalling the engine.

Clutch pedal in a manual vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if a friend who has been drinking wants to drive?

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

Let them drive if they say they feel sober.
Let them drive slowly on quiet roads.
Follow them home in another vehicle.
✓ Encourage them not to drive and arrange safe transport.

Preventing an impaired person from driving can protect them, their passengers, and other road users. Arrange a sober driver, taxi, public transport, or accommodation.

Friends discussing safe transport after drinking
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
When should you switch off your fog lights?

321. When should you switch off your fog lights?

Never, because they always improve visibility.
Whenever you stop at a traffic light.
✓ When visibility improves and they are no longer needed.
When you enter a built-up area.

Fog lights can dazzle other road users when visibility is normal, so switch them off when conditions improve.

Fog-light control as visibility improves
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before making a turn?

322. What should you do before making a turn?

Signal only after you begin turning.
✓ Check mirrors, signal, and make sure it is safe.
Rely on other road users to slow down for you.
Turn as soon as the road ahead appears clear.

Before turning, check your mirrors, use your indicator, and make sure the turn can be made safely.

Driver preparing to turn at a junction
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why does higher speed increase the risk of aquaplaning?

323. Why does higher speed increase the risk of aquaplaning?

The suspension becomes less effective at high speed.
The brakes cannot remove water from the tyres.
The vehicle becomes heavier as speed increases.
✓ The tyres have less time to clear water from the road surface.

At higher speeds, the tyres may not disperse water effectively, making it easier for the vehicle to lose contact with the road.

Vehicle speed and aquaplaning on a wet road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What is the purpose of the manual parking brake?

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

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

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
Why should you leave extra space behind a vehicle climbing a steep hill?

325. Why should you leave extra space behind a vehicle climbing a steep hill?

Its tyres may warm up more quickly.
It must always stop before reaching the top.
Its headlights may point higher uphill.
✓ It may slow down suddenly or roll backward.

Vehicles may lose speed or briefly roll backward when starting on a steep incline. Extra space gives you more time to react.

Vehicle following another up a steep hill
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control symbol indicate?

326. What does this vehicle-control symbol indicate?

✓ Window lock.
Child safety lock.
Mirror adjustment.
Electric window control.

This control activates the window lock, which normally prevents passengers from operating their electric windows while leaving control with the driver.

Lock switch for passenger window controls
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if there is no pavement?

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

Pay attention only to traffic approaching from behind.
Always walk in the same direction as traffic.
Choose the side with the smoothest road surface.
✓ Walk where you can be seen and stay alert.

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
What should you do if the charging-system warning light comes on?

328. What should you do if the charging-system warning light comes on?

Continue driving until the battery is completely discharged.
Restart the engine repeatedly to reset the warning.
Increase engine speed until the warning light goes out.
✓ Reduce electrical use, stop safely, and seek assistance.

The alternator or charging system may have failed. The vehicle may stop once the remaining battery charge is exhausted.

Charging-system warning illuminated on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should a bicycle helmet fit?

329. How should a bicycle helmet fit?

Tilted back to keep your forehead clear.
Tight enough to feel uncomfortable.
High on the head with the straps loose.
✓ Level, secure, and comfortably fitted.

A helmet should sit level on the head and remain securely in place so it can provide effective protection.

Bicycle helmet positioned securely on the rider's head
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Can drivers use a handheld phone while driving in Brazil?

330. Can drivers use a handheld phone while driving in Brazil?

✓ No.
Yes.

Drivers in Brazil are generally not allowed to use a handheld phone while driving.

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

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

Continue slowly using the hazard lights.
Open a side window and continue driving carefully.
✓ Reduce speed and stop in a safe place as soon as possible.
Use the washer fluid repeatedly to clear the windscreen.

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
Why must a roof load be securely attached?

332. Why must a roof load be securely attached?

To stop the roof rack from increasing fuel consumption.
✓ It could shift or fall and create a serious hazard.
To keep the vehicle within its normal height.
Because light roof loads cannot be affected by the wind.

A roof load is exposed to strong airflow and movement. It must be restrained correctly and kept within the permitted limits.

Load secured to a vehicle's roof
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you leave extra space behind a vehicle carrying animals?

333. Why should you leave extra space behind a vehicle carrying animals?

✓ Because it may move slowly or stop unexpectedly.
Because these vehicles always have priority.
Because they must always travel in the centre of the road.
Because they cannot use brake lights.

Vehicles transporting animals may accelerate slowly, take bends carefully, or brake gently to protect their load.

Vehicle following an animal transporter
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should you position your vehicle beside a fuel pump?

334. How should you position your vehicle beside a fuel pump?

As close to the pump as possible, even if access is restricted.
✓ With the fuel-filler side close enough for the hose to reach safely.
Wherever there is space, regardless of the fuel-filler position.
At an angle so the rear of the vehicle is closest to the pump.

Position the vehicle so the fuel filler is close to the pump and the hose can reach without being stretched tightly across or around the vehicle. Stop within the designated refuelling area and leave enough space to use the pump safely.

Vehicle positioned beside a fuel pump
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do when approaching stationary or slow-moving traffic on a motorway?

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

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

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 if another vehicle is tailgating you?

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

Speed up to create more space behind you.
✓ Stay calm and increase your safety margin ahead.
Reduce the gap ahead so they cannot move into it.
Tap the brakes to make them increase their distance.

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
How should tyre pressure normally be checked?

337. How should tyre pressure normally be checked?

✓ When the tyres are cold, using the manufacturer's recommended pressure.
By looking at whether the tyres appear firm.
Immediately after a long or high-speed journey.
Only by a certified maintenance service.

Tyre pressure rises as tyres become warm. Check them when cold and use the pressure specified on the vehicle label or in the owner's manual.

Checking a vehicle's tyre pressure
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do with the parking brake before leaving a parked vehicle?

338. What should you do with the parking brake before leaving a parked vehicle?

Leave it partly applied.
Release it completely.
Apply it only on a slope.
✓ Apply it securely.

Before leaving a parked vehicle, apply the parking brake securely to help prevent unintended movement. Also select the appropriate gear or transmission position for parking.

Securing a parked vehicle with the parking brake
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should a cyclist react to a pothole?

339. How should a cyclist react to a pothole?

Swerve around it as soon as you notice it.
Brake hard just before reaching the pothole.
✓ Check surroundings, reduce speed, and avoid it smoothly.
Focus only on the pothole and not the traffic around you.

Sudden swerving can place you in the path of traffic. Check your surroundings and change direction gradually.

Cyclist approaching a pothole
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if traffic beyond a railway crossing is blocked?

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

Follow the vehicle ahead closely across the tracks.
Enter the crossing and wait for traffic to move.
✓ Wait until there is enough space to clear the tracks completely.
Cross quickly before the warning signals activate.

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
What is the main risk when following a vehicle with limited rear visibility?

341. What is the main risk when following a vehicle with limited rear visibility?

The vehicle must always travel more slowly.
✓ The driver may not see you clearly.
The driver can see you better if you follow closely.
The vehicle has priority when changing lanes.

Vans, trucks, and vehicles with blocked rear windows may have limited visibility. Keep extra distance and avoid sitting in blind spots.

Vehicle with limited rearward visibility
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Does opening a window make an alcohol-impaired driver safe?

342. Does opening a window make an alcohol-impaired driver safe?

Yes, if you also drink some water.
Yes, but only when driving slowly.
Yes, if you feel more awake afterwards.
✓ No, fresh air does not remove alcohol from the body.

Fresh air may make someone feel more awake, but it does not reduce their alcohol concentration or restore safe driving ability.

Open car window and an alcohol-impaired driver
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if the engine-temperature warning shows overheating?

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

Open the coolant cap immediately to release heat.
Increase engine speed to improve coolant circulation.
Ignore it if the engine still sounds normal.
✓ Stop safely, switch off the engine, and allow it to cool.

Continuing to drive an overheating vehicle can cause severe damage. Allow the engine to cool and follow the manufacturer's instructions.

Engine-overheating warning on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do at a railway crossing without barriers?

344. 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
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

345. What does this dashboard symbol indicate?

Dipped headlights.
Charging-system warning.
✓ Exterior-light failure.
Engine-management warning.

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
What should you do when traffic lights change to amber as you approach?

346. What should you do when traffic lights change to amber as you approach?

Accelerate to pass before the light turns red.
Stop even if this requires sudden harsh braking.
Treat it like a green light until it turns red.
✓ Stop if you can do so safely.

An amber light warns that the signal is changing. Stop if it is safe, but avoid sudden braking that could cause danger behind you.

Vehicle approaching an amber traffic light
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Which control activates all direction indicators at the same time?

347. Which control activates all direction indicators at the same time?

The headlight switch.
✓ The hazard warning light switch.
The parking-brake control.
The rear-window demister.

The hazard warning light switch activates all direction indicators at the same time to warn other road users of a hazard or emergency.

Hazard warning light switch and triangle symbol
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before crossing behind a bus or large vehicle?

348. What should you do before crossing behind a bus or large vehicle?

✓ Wait until you have a clear view of the road.
Stay close behind the vehicle while crossing.
Cross if the nearest traffic lane appears clear.
Cross as soon as the vehicle has stopped.

Large vehicles can block your view and hide you from drivers. Wait until you can clearly see the road before crossing.

Pedestrian preparing to cross behind a bus
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should motorcyclists take extra care on wet road markings?

349. Why should motorcyclists take extra care on wet road markings?

✓ They can provide less grip than the surrounding road.
They can increase the motorcycle's engine temperature.
They can make the brakes overheat.
They can prevent the indicators from working.

Wet painted road markings can provide less grip than the surrounding road surface. Ride smoothly over them and avoid sudden braking, acceleration or steering that could cause the tyres to lose grip.

Motorcycle approaching wet painted road markings
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should luggage or other cargo be carried in or on a vehicle?

350. How should luggage or other cargo be carried in or on a vehicle?

Where it is easiest to reach while driving.
Loosely in the passenger area for short journeys.
✓ Securely, within load limits, without blocking visibility or lights.
Anywhere, as long as the vehicle is not overloaded.

Unsecured or overloaded cargo can affect steering and braking, injure occupants during sudden stops, or fall into the road. It must not obstruct the driver's view or vehicle lights.

Luggage and cargo carried in a vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA