QuizTraffic rulesIreland

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.


What should you expect when lanes become narrower in roadworks?

451. What should you expect when lanes become narrower in roadworks?

All vehicles must drive in the centre of the lane.
✓ Less space between your vehicle, barriers, and other traffic.
Temporary lane markings no longer need to be followed.
The speed limit automatically increases.

Narrow lanes leave less room for error. Keep a steady position, avoid drifting toward barriers or nearby vehicles, and reduce speed if necessary.

Narrow traffic lanes through roadworks
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How should cyclists brake on a wet road?

452. How should cyclists brake on a wet road?

Brake later and more firmly than usual.
✓ Brake earlier and more gradually than usual.
Brake sharply once you are close to stopping.
Brake normally because wet roads do not affect grip.

Wet surfaces reduce grip and increase stopping distance. Smooth, early braking helps prevent skidding.

Cyclist braking on a wet road
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Which vehicle type is mainly associated with driving licence D?

453. Which vehicle type is mainly associated with driving licence D?

Moped.
Truck.
✓ Bus.
Motorcycle.

Driving licence D is mainly associated with buses. Category D1 covers smaller buses, D covers larger buses, and D1E and DE allow heavier trailers.

Driving licence card for category D
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Which licence category is mainly associated with trucks?

454. Which licence category is mainly associated with trucks?

✓ Licence C.
Licence A.
Licence AM.
Licence B.

Driving licence C is mainly associated with trucks. Category C1 covers smaller heavy vehicles, C covers larger heavy vehicles, and C1E and CE allow heavier trailers.

Truck and category C driving licence
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Why should you be extra careful at night?

455. Why should you be extra careful at night?

Road markings become less important.
Street lighting makes drivers less alert.
Vehicles need more distance to accelerate.
✓ Visibility is reduced.

At night, it is harder to see pedestrians, cyclists, road markings, and hazards. Reduce speed and use the correct lights.

Road traffic in reduced night-time visibility
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Why should you avoid resting your foot on the clutch pedal while driving?

456. Why should you avoid resting your foot on the clutch pedal while driving?

✓ It can cause unnecessary clutch wear.
It can lock the steering.
It can apply the parking brake.
It can increase tyre pressure.

Resting your foot on the clutch pedal can apply slight pressure to the clutch mechanism and cause unnecessary wear. Keep your left foot off the clutch when it is not needed.

Foot position near the clutch pedal
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Rain can reduce tyre grip and increase stopping distance.

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

✓ True.
False.

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

Vehicle travelling on a wet road
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Why should you notice the location of emergency exits in a tunnel?

458. Why should you notice the location of emergency exits in a tunnel?

✓ You may need to reach one quickly during an emergency.
They provide shortcuts to nearby roads.
They show where overtaking is prohibited.
Pedestrians may be crossing near them.

Knowing where emergency exits and refuge areas are located can save valuable time during a fire, collision, or evacuation.

Emergency exit inside a road tunnel
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What is the main risk when following a vehicle with limited rear visibility?

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

The vehicle has priority when changing lanes.
The driver can see you better if you follow closely.
The driver cannot use the side mirrors.
✓ The driver may not see you clearly.

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
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Which side is normally used for overtaking in Ireland?

460. Which side is normally used for overtaking in Ireland?

✓ Right-hand side.
Left-hand side.

Drivers normally overtake on the right-hand side in Ireland.

Vehicle overtaking on the right
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What should you do if one of your tyres suddenly bursts while driving?

461. What should you do if one of your tyres suddenly bursts while driving?

Steer quickly toward the side of the road.
✓ Hold the steering wheel firmly and slow down gradually.
Release the steering wheel and let the vehicle slow itself.
Accelerate briefly to stabilise the vehicle.

A tyre burst can make the vehicle unstable. Hold the wheel firmly, avoid sudden braking or steering, and slow down gradually.

Vehicle tyre damaged by a sudden blowout
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What should you do when crossing a road with no marked crossing nearby?

462. What should you do when crossing a road with no marked crossing nearby?

Cross where the road is narrowest, even if visibility is poor.
✓ Choose a place with a clear view in both directions.
Cross near a bend if approaching traffic seems slow.
Cross between parked vehicles if traffic seems quiet.

If there is no marked crossing nearby, choose a safe place where you can clearly see approaching traffic.

Pedestrian preparing to cross a road without a marked crossing
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Why should you leave space beside large vehicles when they turn?

463. Why should you leave space beside large vehicles when they turn?

✓ They may need extra room to complete the turn.
They always have priority while turning.
They can turn only from the centre of the road.
They always turn more slowly than cars.

Large vehicles often swing wide when turning and have larger blind spots. Keep clear and do not move into the space beside them.

Large vehicle needing extra space to turn
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How can you check which fuel is suitable for your vehicle?

464. How can you check which fuel is suitable for your vehicle?

Ask another driver with a similar-looking vehicle.
Use petrol unless the engine sounds like a diesel.
Choose whichever fuel is cheapest at the station.
✓ Check the fuel-filler label, fuel cap, or vehicle information.

Before refuelling, check which fuel type the vehicle requires. The correct fuel is often shown inside the fuel-filler flap, on or near the fuel cap, or in the vehicle information or owner's manual. Do not rely only on nozzle colours, as these can vary between filling stations and countries.

Checking the fuel label before refuelling
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What should you do if another driver does not give way when they should?

465. What should you do if another driver does not give way when they should?

Accelerate so you pass through first.
Use the horn and continue at the same speed.
Move closer so the other driver is forced to give way.
✓ Slow down and avoid a collision.

Even if you have priority, safety comes first. Slow down, stay calm, and avoid creating a dangerous situation.

Conflicting vehicle movements at a junction
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What is the purpose of heated door mirrors?

466. What is the purpose of heated door mirrors?

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

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

Heated door-mirror control and demisting function
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Why should you leave extra space when passing road workers?

467. Why should you leave extra space when passing road workers?

Road workers are protected by the construction barriers.
✓ They may be working close to moving traffic.
To keep construction dust away from your vehicle.
To avoid damaging temporary road markings.

Workers may be only a short distance from passing vehicles. Reduce speed and leave as much safe space as possible.

Vehicle passing workers close to the road
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How can the parking brake help when moving off uphill?

468. How can the parking brake help when moving off uphill?

It releases the clutch.
✓ It can prevent the vehicle from rolling backwards.
It increases engine power.
It selects a lower gear automatically.

When moving off uphill, the parking brake can hold the vehicle stationary while you prepare to move. Release it smoothly once the clutch reaches the biting point and sufficient power is applied.

Parking-brake control during an uphill start
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How can worn tyres affect driving in heavy rain?

469. How can worn tyres affect driving in heavy rain?

They shorten the stopping distance on wet roads.
They make steering more responsive in heavy rain.
They reduce the chance of skidding at low speeds.
✓ They increase the risk of aquaplaning.

Tyre tread helps channel water away and maintain grip. Worn tyres cannot clear water as effectively, increasing stopping distance and the risk of aquaplaning.

Worn tyre tread and wet-road grip
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What should you do if an overtaking vehicle is coming toward you?

470. What should you do if an overtaking vehicle is coming toward you?

Move closer to the centre so the other driver notices you.
Accelerate to pass the danger point more quickly.
✓ Slow down and move slightly aside if safe.
Maintain your speed and expect the other driver to return to their lane.

If an oncoming vehicle creates danger while overtaking, reduce speed and make space if it is safe to do so. Avoid sudden movements that could create an additional hazard.

Oncoming vehicle overtaking into the driver's lane
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Does the priority-to-the-right rule apply in Ireland?

471. Does the priority-to-the-right rule apply in Ireland?

No.
✓ Yes.

In Ireland, the priority-to-the-right rule generally applies at uncontrolled intersections.

Vehicle approaching a junction from the right
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Why is counting drinks an unreliable way to decide whether you can drive?

472. Why is counting drinks an unreliable way to decide whether you can drive?

Food makes each drink count as less alcohol.
You can judge your alcohol level by how sober you feel.
One drink affects every person in the same way.
✓ Drink strength, serving size, and individual effects can vary.

Alcohol concentration and serving sizes vary, and factors such as body size, food, medication, and time can affect impairment.

Alcoholic drinks with different strengths and serving sizes
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Why should you leave extra space behind a vehicle climbing a steep hill?

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

It must always stop before reaching the top.
✓ It may slow down suddenly or roll backward.
Its engine may become louder on the hill.
Its headlights may point higher uphill.

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

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

Drink several energy drinks before leaving.
Keep the cabin as warm as possible.
✓ Get enough sleep before starting the journey.
Avoid taking any breaks until you feel tired.

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

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

✓ Stop safely, switch off the engine, and seek assistance.
Continue slowly if the vehicle still responds normally.
Wait until the next service to have it checked.
Stop only if another warning light appears.

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
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What is the general minimum legal tread depth for car tyres in Ireland?

476. What is the general minimum legal tread depth for car tyres in Ireland?

✓ 1.6 mm.
1.5 mm.
1.0 mm.
2.0 mm.

The general minimum legal tread depth for car tyres in Ireland 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
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Using indicators helps other road users understand your intentions.

477. Using indicators helps other road users understand your intentions.

✓ True.
False.

Indicators help communicate your intended direction and improve safety for everyone on the road.

Vehicle signalling its intended direction
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Are winter tyres generally required in Ireland?

478. Are winter tyres generally required in Ireland?

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

Winter tyres are not generally required for cars in Ireland, although they may still be recommended or required in specific situations.

Winter tyres for cold-weather driving
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What should you do with a helmet that has taken a significant impact in a collision?

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

Use it again after tightening the straps.
Replace only the outer shell if it is scratched.
✓ Stop using it and follow the manufacturer's replacement guidance.
Keep using it if there are no visible cracks.

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

Helmet inspection after a significant impact
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Why can bridges and overpasses become icy before nearby roads?

480. Why can bridges and overpasses become icy before nearby roads?

Traffic usually moves faster across bridges.
✓ Cold air circulates above and below them.
Bridges are always at a higher altitude.
Road salt is less effective on bridges.

Bridges lose heat from both their upper and lower surfaces, so they can freeze before roads built directly on the ground.

Icy surface on an exposed bridge
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What should you do if a load extends beyond the vehicle?

481. What should you do if a load extends beyond the vehicle?

✓ Make sure it is legal, secure, and properly marked when required.
Leave it unmarked if it is easy to see.
Secure only the part that remains inside the vehicle.
Let the load extend as far as necessary.

An extending load may create additional danger and may require specific markings or equipment under local rules.

Load projecting beyond a vehicle
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What can happen if you use the brakes continuously on a long descent?

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

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

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

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

It reduces aerodynamic drag.
It always reduces fuel consumption.
✓ It can increase the energy needed to move the vehicle.
It improves braking efficiency.

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

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

Motorway cameras may not recognise the vehicle correctly.
The speedometer may become less accurate.
✓ Other drivers approach quickly and do not expect traffic facing them.
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
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Why should you never leave a petrol or diesel engine running in an enclosed space?

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

✓ Dangerous carbon monoxide can build up.
The engine can lose oil pressure.
The battery can become overcharged.
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
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What should you do before driving through a puddle?

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

Accelerate so you spend less time in the water.
Brake firmly while driving through the water.
✓ Slow down and check that it is safe.
Maintain your normal speed if the road looks clear.

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

Vehicle approaching a puddle on the road
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What should you check after fitting a child restraint?

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

That the seat belt is routed in any convenient way.
✓ That it is securely installed and correctly fitted.
That the child can easily loosen the harness.
That the restraint is tilted as far back as possible.

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
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What does turning a traditional ignition switch to OFF normally do?

488. What does turning a traditional ignition switch to OFF normally do?

Operates the starter motor.
Selects accessory power.
Releases the parking brake.
✓ Switches off the engine and ignition systems.

Turning a traditional ignition switch to OFF switches off the engine and ignition systems. The key can then normally be moved to the LOCK position and removed.

OFF position on a traditional ignition switch
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What does this dashboard symbol indicate?

489. What does this dashboard symbol indicate?

Differential lock.
✓ Four-wheel-drive system.
Low tyre pressure.
Electronic stability control.

This symbol relates to the vehicle's four-wheel-drive system, which can transmit power to all four wheels. The exact symbol and operating modes vary between vehicles.

Four-wheel-drive system symbol on the dashboard
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Why is it dangerous to cross between parked cars?

490. Why is it dangerous to cross between parked cars?

You cannot hear approaching traffic between cars.
Pedestrians lose priority when crossing between cars.
Traffic always moves faster beside parked cars.
✓ Drivers may not see you or expect you to cross.

Parked vehicles can block the view between pedestrians and drivers. This makes it harder to see approaching traffic and harder for drivers to see you.

Pedestrian crossing between parked cars
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What should you do if your vehicle begins to skid on ice?

491. 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.
Steer rapidly from side to side.
Press the brake pedal hard and hold it.
Apply the parking brake to straighten the vehicle.

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
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What is the minimum licence for a C vehicle towing a trailer over 750 kg?

492. What is the minimum licence for a C vehicle towing a trailer over 750 kg?

Licence C1.
Licence C1E.
Licence BE.
✓ Licence CE.

Category C permits a trailer with a maximum authorised mass of up to 750 kg. A category C vehicle towing a trailer or semi-trailer above 750 kg requires category CE.

Category C vehicle towing a trailer over 750 kg
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What is the minimum licence for a D bus towing a trailer over 750 kg?

493. What is the minimum licence for a D bus towing a trailer over 750 kg?

Licence BE.
Licence D1E.
Licence CE.
✓ Licence DE.

Category D permits a trailer with a maximum authorised mass of up to 750 kg. A category D vehicle towing a trailer above 750 kg requires category DE.

Category D bus towing a trailer over 750 kg
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Who normally has priority at roundabouts in Ireland?

494. Who normally has priority at roundabouts in Ireland?

Traffic entering the roundabout.
✓ Traffic already on the roundabout.

In Ireland, traffic entering a roundabout normally gives way to traffic already circulating.

Vehicles approaching and circulating on a roundabout
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What can selecting a lower gear provide in a manual vehicle?

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

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

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
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When should you switch off your fog lights?

496. When should you switch off your fog lights?

Never, because they always improve visibility.
Whenever you stop at a traffic light.
Only after the journey is finished.
✓ When visibility improves and they are no longer needed.

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

Fog-light control as visibility improves
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What should you do when approaching a narrow road with oncoming traffic?

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

Maintain your speed if there appears to be enough room.
✓ Slow down and give space when needed.
Expect the oncoming driver to make room for you.
Continue first if you entered the narrow section earlier.

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
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Why should you take care when parking a motorcycle on soft ground?

498. Why should you take care when parking a motorcycle on soft ground?

The tyres may immediately lose air pressure.
✓ The stand may sink into the ground and the motorcycle could fall.
The chain may become too tight.
The engine may become difficult to start.

On soft or unstable ground, the side or centre stand can sink or move, causing the motorcycle to fall. Park on a firm, stable surface or use a suitable support under the stand when necessary.

Motorcycle stand resting on soft ground
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How should you leave a broken-down vehicle when traffic is passing nearby?

499. How should you leave a broken-down vehicle when traffic is passing nearby?

Get out immediately without checking for traffic.
✓ Use the door furthest from moving traffic when it is safe to do so.
Walk around the vehicle on the traffic side.
Leave through the door nearest moving traffic.

Leaving through the side away from traffic reduces the risk of being struck by a passing vehicle.

Leaving a broken-down vehicle away from passing traffic
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What should you do if traffic beyond a railway crossing is blocked?

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

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

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
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