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

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.
✓ Bridges and viaducts only become slippery in frost at the same moment as the rest of the road, not earlier.
'if that burns or starts flashing, you stop'. Steady red and flashing red both mean the same thing at the bridge light: stop.
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.

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

Explanation

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

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