Visibility & Road Hazards: DGT theory test questions in English
Chapter 12 of 17 · 27 questions
Driving at night, in fog, rain, snow and wind, and on dangerous stretches. Many answers come down to slowing down and increasing distance, but the details matter.
Practice it properlyAnswer these one at a time and track the chapters you keep missing, or sit a timed 30-question mock exam.
1.The road surface on a freeway (autopista) is icy. Can you drive at 40 km/h?
Yes, but you must use the shoulder so you don't hold up faster vehicles.
No, because that is an abnormally slow speed.
Yes, because these are special conditions.
Show answer
Answer: C. Yes, because these are special conditions.
Ice, heavy rain and snowfall are good reasons to drive below the minimum speed, so 40 km/h on an icy freeway is allowed. Driving slowly helps you keep control and react in time. It doesn't count as abnormally slow here, and you don't have to move to the shoulder.
2.What extra danger does a layer of standing water from rain create?
The brakes get wet and overheat.
The tires may lose their grip on the road.
None, since the water cools the tires and helps you brake.
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Answer: B. The tires may lose their grip on the road.
When the road is covered in water, your tires grip the surface less and can slip. Braking also works worse, so you need more distance to stop and the risk of a crash goes up. Water doesn't improve braking, and overheating brakes isn't the issue.
3.How can you lower the risk of running into hazards while driving?
By driving at night, when there is less traffic.
By driving at 50 km/h on every road.
By adjusting your speed and leaving more following distance.
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Answer: C. By adjusting your speed and leaving more following distance.
Defensive driving means matching your speed to each stretch of road and staying ready for the unexpected. It also means leaving more space to the vehicle ahead when needed. Night driving brings its own risks, and one fixed speed on every road doesn't suit conditions.
4.Your car has stopped on a snowy road. What is the best way to get moving again?
In fourth gear, accelerating hard.
In first gear, accelerating hard.
In second gear, accelerating gently.
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Answer: C. In second gear, accelerating gently.
Snow and ice cut your tires' grip. To pull away, accelerate gently in the highest gear you can use, usually second or third, so the wheels don't spin. First gear or hard acceleration makes the wheels spin, and fourth gear is too high to move off.
5.On a windy day, riding a motorcycle is most dangerous when the wind blows...
In gusts.
From behind.
From the front.
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Answer: A. In gusts.
Gusts are sudden and unpredictable, so they can push a motorcycle sideways without warning. The risk is highest when you pass or ride alongside large vehicles: they block the wind for a moment, then it hits you again as you clear them. Steady wind from the front or from behind is much easier to predict and control.
6.How should you drive defensively on an icy road?
Slow down and use low gears.
Take extra care during the day.
Slow down and use high gears.
Show answer
Answer: C. Slow down and use high gears.
On ice, you should slow down and use the highest gear you can, accelerating gently and smoothly. A high gear sends less torque to the wheels, so they are less likely to spin and lose grip. Low gears make wheelspin more likely, and ice is a hazard at any time of day, not just in daylight.
7.Do distractions play a role in crashes involving cyclists?
No, crashes involving cyclists have other causes.
No, cyclists as a group are rarely distracted.
Yes, cyclists' own distractions are directly linked to them.
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Answer: C. Yes, cyclists' own distractions are directly linked to them.
Distraction and lack of experience on the cyclist's part cause most crashes involving bicycles. Cyclists should avoid earphones, GPS devices and phones while riding, as well as risky passing and chatting while riding side by side. So the claims that distraction plays no role, or that cyclists are rarely distracted, are wrong.
8.What is the main job of a vehicle's frame?
To give the vehicle an aerodynamic shape.
To make the vehicle look good.
To protect the people inside.
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Answer: C. To protect the people inside.
The frame's main job is to hold and protect the occupants. In a crash, it keeps outside objects from entering the cabin and preserves a minimum survival space around the people inside. Looks and aerodynamics are not its main purpose.
9.You get caught in a sudden downpour while driving. What should you do?
Speed up to get out of the storm.
Always stop, even if you are on the roadway.
Stop where it is allowed and safe, and leave your parking lights on.
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Answer: C. Stop where it is allowed and safe, and leave your parking lights on.
In heavy rain, grip drops, so brake gently, slow down and leave more distance to the vehicle ahead. If the downpour is very intense, stop in a place where stopping is allowed and safe, and keep your parking lights on until it passes. Speeding up is dangerous on a wet road, and stopping on the roadway itself risks a collision.
10.How should you adjust your vehicle's mirrors?
Stopped or moving, it makes no difference.
With the vehicle stopped on a straight road.
While moving, so you can see better.
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Answer: B. With the vehicle stopped on a straight road.
Adjust your mirrors to your height and seating position before you start driving, with the vehicle stopped on a flat, straight stretch of road so you can set them to cut down blind spots. Adjusting them while moving distracts you from driving, so it does matter whether you are stopped.
11.What are turn signals for?
Only for showing right or left turns.
They are not very useful except in heavy traffic.
For communicating with other road users.
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Answer: C. For communicating with other road users.
Turn signals let other road users know what maneuver you are about to make, so they are a way to communicate your intentions. They are used for more than just turns, such as changing lanes, passing or pulling over, and they matter in all traffic conditions, not only heavy traffic.
12.This sign warns that you are approaching a stretch of road...
Where rock or snow slides are common.
With a dangerous, steep downhill grade.
With a dangerous, steep uphill grade.
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Answer: B. With a dangerous, steep downhill grade.
This warning sign (P-16a) means a stretch with a steep downhill grade is ahead, so you should take care. The percentage shown on the sign is the grade of the slope. A steep uphill grade and falling rocks or snow have their own separate signs.
13.On ice or snow, it is best to drive...
Braking hard in curves.
In the lowest gear possible.
In the highest gear possible.
Show answer
Answer: C. In the highest gear possible.
On snow or ice, drive in the highest gear possible and accelerate gently and smoothly, because a high gear makes wheelspin less likely. Low gears send more force to the wheels and make them slide more easily. Braking hard, especially in curves, can make you lose control.
14.There is gravel on the road. What should you do to avoid a cracked windshield?
Speed up to reduce the force of the impact.
Nothing, since a clean windshield is less likely to crack.
Leave more distance from the vehicles ahead.
Show answer
Answer: C. Leave more distance from the vehicles ahead.
On roads covered with gravel, sand or leaves, increase your following distance so that stones thrown up by the vehicles ahead do not hit and crack your windshield. Speeding up makes impacts harder, not softer, and a clean windshield is no protection against flying stones.
15.What must a motorcycle that can go faster than 100 km/h have?
Two rearview mirrors, one on each side.
A rearview mirror on the right side only.
A rearview mirror on the left side only.
Show answer
Answer: A. Two rearview mirrors, one on each side.
All motorcycles must have a left rearview mirror. If the motorcycle's top speed is 100 km/h or less, the right mirror is optional; if it can go faster than 100 km/h, the right mirror is also required. So a single mirror on either side is not enough.
16.When are you allowed to use a cell phone while driving?
When you are stopped at a red light.
With a hands-free system, for short periods.
To read and send text messages.
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Answer: B. With a hands-free system, for short periods.
Spanish traffic rules ban using a cell phone while driving unless the call is made without using your hands and without headphones or earphones, through a hands-free system, and only for short periods. Stopping at a red light still counts as driving, and reading or sending messages is never allowed.
17.From this sign onward, you face a hazard because you are approaching...
An area where landslides often happen.
A stretch where passing vehicles may kick up loose gravel.
Large puddles that will force you to slow down.
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Answer: B. A stretch where passing vehicles may kick up loose gravel.
This sign (P-28) warns of loose gravel on the road that passing vehicles can throw up. Slow down and keep more distance from the vehicle ahead. It doesn't warn about landslides or puddles; other signs cover those hazards.
18.Can you drive with tinted film or sun shades on your car windows?
Yes, on the rear windows, if the car has two exterior mirrors.
Yes, but only during the day.
No, never.
Show answer
Answer: A. Yes, on the rear windows, if the car has two exterior mirrors.
Your windows must give you a clear view of the road, so film and shades aren't allowed where they block your vision. They are allowed on the rear windows only if the car has two approved exterior mirrors, one on each side. Time of day doesn't matter, and "never" is too strict.
19.Which kind of wind is especially dangerous on a motorcycle?
A tailwind, because it pushes you faster.
A headwind, because it slows you down.
A crosswind.
Show answer
Answer: C. A crosswind.
A strong crosswind can push a motorcycle sideways and out of its lane. Leave extra side space from other vehicles and be ready to correct your line. A headwind or tailwind mainly changes your speed, which is easier to control.
20.On a snowy road, you should drive up a hill...
In the lowest gear possible.
Slowly and at a steady speed.
Fast, because if you stop it will be hard to get moving again.
Show answer
Answer: B. Slowly and at a steady speed.
Climbing slowly at a steady speed helps your tires keep their grip, so the car doesn't slip. Use the highest gear you can, not the lowest, because low gears send too much power to the wheels and make them spin. Going fast makes you more likely to lose control.
21.Smoking while you drive can cause...
Drowsiness.
Better focus and attention.
Distraction and vision problems from the smoke.
Show answer
Answer: C. Distraction and vision problems from the smoke.
Lighting and putting out a cigarette distracts you and takes a hand off the wheel. The smoke can also irritate your eyes and blur your view. It doesn't improve your focus, and drowsiness isn't its typical effect.
22.When it's raining, it's important to...
Increase your tire pressure.
Avoid pressing the clutch.
Test your brakes from time to time.
Show answer
Answer: C. Test your brakes from time to time.
Rain and puddles can soak your brakes and make them less effective. Now and then, press the brake pedal gently to dry the discs and drums and check they still work. Raising tire pressure reduces grip, and avoiding the clutch makes no sense.
23.When is wind most dangerous for a motorcycle?
When it blows from the side in gusts.
When it's a headwind.
When it's a tailwind.
Show answer
Answer: A. When it blows from the side in gusts.
Gusty crosswinds can suddenly push a motorcycle sideways. Take extra care when you pass or ride next to large vehicles: they block the wind for a moment, and then the gust hits you again as you clear them. Headwinds and tailwinds mostly affect speed, not your line.
24.What should you do to stay safe on a stretch of road with puddles?
Keep a high speed to get through as quickly as possible.
Use a high gear.
Slow down and keep a steady throttle.
Show answer
Answer: C. Slow down and keep a steady throttle.
Slow down, use a low gear, and keep a steady throttle so your tires keep contact with the road. Speed raises the risk of hydroplaning, and a high gear gives you less control. Once you're through, press the brake lightly to dry it and check that it works.
25.How many rearview mirrors must a motorcycle have if its top speed is under 100 km/h?
A right mirror is required, and a left one is optional.
Two, one on each side.
A left mirror is required, and a right one is optional.
Show answer
Answer: C. A left mirror is required, and a right one is optional.
A motorcycle that can't reach 100 km/h must have a left mirror, and the right one is optional. Two mirrors are only required when the top speed is over 100 km/h. The right mirror is never the only required one.
26.In thick fog, you must...
Slow down.
Drive on the shoulder.
Drive with only your front fog lights on.
Show answer
Answer: A. Slow down.
In thick fog, lower your speed so you can stop in time for anything that appears ahead. You must also turn on your rear fog lights. Driving on the shoulder isn't allowed, and front fog lights alone aren't enough.
27.Two-wheeled mopeds must have...
Only a right-side mirror.
Only a left-side mirror.
Two mirrors, one on each side.
Show answer
Answer: B. Only a left-side mirror.
Mopeds must always have a left mirror. The right one is optional because mopeds can't go over 100 km/h. Two mirrors are only required on motorcycles that can exceed that speed.