Light, vision & weather

About Snow, black ice and winter tyres: clearing, driving style and the chain rule: which statement is correct?

During snowfall full beam is only a problem when oncoming traffic approaches; without oncoming traffic it is simply allowed.
In the Netherlands the use of metal snow chains is banned; plastic snow chains ARE allowed.
It is enough to clear only the windscreen of snow before setting off.
Winter tyres are mandatory in the Netherlands as soon as it snows or freezes.

Explanation

trap: a foreign rule applied to the Netherlands. Book p.196 - in the Netherlands the use of metal snow chains is banned; plastic snow chains ARE allowed

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