Visibility and Road Hazards
Study all Visibility and Road Hazards questions for the Spanish DGT theory test.
Reviewed on 9 Aug 2026
32 questions
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- Why is visibility one of the most critical factors for road safety?
- Which of the following is NOT a cause of reduced visibility?
- When is a road considered to be insufficiently lit?
- In dense fog, which type of light should NOT be used?
- When driving in heavy rain, which measure is the most appropriate?
- In rain or snow during the day, which lights should you switch on?
- Driving at night on an unlit road with high beams, a vehicle approaches from the front. What should you do?
- In a lit urban area at night, which lights should you generally use?
- To reduce sun glare, which of these measures is correct?
- What is the main purpose of vehicle lights in low-visibility conditions?
- When driving through a tunnel, which lights are mandatory?
- In which case is the use of the rear fog light mandatory?
- When may the front fog light be used?
- In reduced-visibility conditions, what should the safety distance to the vehicle ahead be?
- With visibility limited by fog, which lane is preferable on a multi-lane road?
- In poor-visibility conditions, what kind of manoeuvres should be avoided?
- If you need to stop in the middle of dense fog, what is the correct action?
- What shape and colour are the signs that warn of a hazard on the road?
- The P-29 warning sign warns of:
- You are driving in strong crosswinds and a lorry overtakes you. What effect should you anticipate?
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Frequently asked questions
- Why is visibility one of the most critical factors for road safety?
- Because it determines how quickly hazards are detected and reacted to If the driver cannot see clearly, or cannot be seen by others, the risk of an accident rises sharply, because visibility determines how quickly hazards are detected and reacted to.
- Which of the following is NOT a cause of reduced visibility?
- The colour of the vehicle's paintwork Fog, heavy rain, snow, glare, or a dirty windscreen reduce visibility. The condition of the vehicle's paintwork has no effect on what the driver can see.
- When is a road considered to be insufficiently lit?
- When you cannot read a plate at 10 m or see a dark vehicle at 50 m A road is considered poorly lit when the driver cannot read a number plate at 10 metres or distinguish a dark-coloured vehicle at 50 metres.
- In dense fog, which type of light should NOT be used?
- High beams (main beam) In fog, high beams (main beam) must not be used, as their light reflects off the suspended water particles and worsens visibility further. Dipped headlights should be used instead.
- When driving in heavy rain, which measure is the most appropriate?
- Reduce speed and increase braking distance In heavy rain you must reduce speed and increase braking distance, and use dipped headlights to see and be seen, because water reduces grip and visibility.