Correct answer
Requires snow chains, authorised anti-slip devices or special snow tyres to continue.
R-412 requires you not to continue without snow chains or other authorised anti-slip devices acting on at least one wheel on each side of the same driven axle, or special snow tyres. Merely carrying chains is insufficient when chains are the chosen solution. This is a requirement, not a recommendation or by itself a road-closure notice.
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Indicates that the road is closed to every vehicle because of snow.
Requires snow chains, authorised anti-slip devices or special snow tyres to continue.
Only recommends carrying chains inside the vehicle.
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