Theory Mastery

Brug zijwindhinder bord j31

On bridges and viaducts you can suffer from side wind, especially outside the built-up area on high bridges and above large open water — a sign with a wind sock (J31) can announce this

Source: RVV 1990 art. 32 · checked 2026-10-23

How the exam asks it

About Bridge and tunnel: side wind, the bridge light, and the tunnel emergency procedures: which statement is correct?

  1. At the bridge light you only need to stop if the red light is flashing, not if it is burning continuously (steady) red.
  2. You may only switch on your dipped headlights once you actually enter the tunnel, not earlier.
  3. Because the wind also passes underneath, a bridge's road surface cools faster and freezes earlier than ordinary roads.
  4. If your own car catches fire in a tunnel, your best option is to turn around or reverse to the nearest tunnel entrance.
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Correct answer: Because the wind also passes underneath, a bridge's road surface cools faster and freezes earlier than ordinary roads.

Because the wind also passes underneath, a bridge's road surface cools faster and freezes earlier than ordinary roads

Why learners get this wrong: At the bridge light you only need to stop if the red light is flashing, not if it is burning continuously (steady) red.

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About Bridge and tunnel: side wind, the bridge light, and the tunnel emergency procedures: which statement is WRONG?

  1. Dipped headlights must go on well before you enter the tunnel, precisely because drivers behind you might otherwise think you are braking if the light only comes on inside the tunnel.
  2. Bridges and viaducts only become slippery in frost at the same moment as the rest of the road, not earlier.
  3. 'if that burns or starts flashing, you stop'. Steady red and flashing red both mean the same thing at the bridge light: stop.
  4. You never cross the carriageway; you walk along the tunnel wall in the direction of traffic to the nearest emergency post on your own side.
Show the answer

Correct answer: Bridges and viaducts only become slippery in frost at the same moment as the rest of the road, not earlier.

Because the wind also passes underneath, a bridge's road surface cools faster and freezes earlier than ordinary roads

Why learners get this wrong: You may only switch on your dipped headlights once you actually enter the tunnel, not earlier.

Open this question

About Bridge and tunnel: side wind, the bridge light, and the tunnel emergency procedures: which statement is correct?

  1. 'if that burns or starts flashing, you stop'. Steady red and flashing red both mean the same thing at the bridge light: stop.
  2. Bridges and viaducts only become slippery in frost at the same moment as the rest of the road, not earlier.
  3. In case of breakdown in a tunnel you may cross the carriageway if the nearest emergency post is on the other side.
  4. If your own car catches fire in a tunnel, your best option is to turn around or reverse to the nearest tunnel entrance.
Show the answer

Correct answer: 'if that burns or starts flashing, you stop'. Steady red and flashing red both mean the same thing at the bridge light: stop.

'if that burns or starts flashing, you stop'. Steady red and flashing red both mean the same thing at the bridge light: stop

Why learners get this wrong: Bridges and viaducts only become slippery in frost at the same moment as the rest of the road, not earlier.

Open this question

At the bridge light you only need to stop if the red light is flashing, not if it is burning continuously (steady) red.

  1. False
  2. True
Show the answer

Correct answer: False

'if that burns or starts flashing, you stop'. Steady red and flashing red both mean the same thing at the bridge light: stop

Why learners get this wrong: At the bridge light you only need to stop if the red light is flashing, not if it is burning continuously (steady) red.

Open this question

In the Kiltunnel your car breaks down. You can no longer drive on. The nearest emergency post appears to be on the other side of the carriageway. What do you do?

  1. I cross the carriageway to the emergency post on the other side, because it is closer
  2. I park as far right as possible, switch on the hazard lights, and walk along the wall in the direction of traffic to the emergency post on my own side
Show the answer

Correct answer: I park as far right as possible, switch on the hazard lights, and walk along the wall in the direction of traffic to the emergency post on my own side

You never cross the carriageway, even if an emergency post on the other side seems closer

Why learners get this wrong: In case of breakdown in a tunnel you may cross the carriageway if the nearest emergency post is on the other side.

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