In Austrian traffic rules (StVO/KFG), under what condition are all-wheel-drive vehicles exempt from the mandatory snow chain sign?

Answer and explanation

Correct answer: B. Only if an additional sign explicitly says Ausgenommen Allradfahrzeuge with winter tyres

  1. Step 1: All-wheel-drive vehicles must mount chains when the sign is displayed unless an auxiliary plaque ('ausgenommen Allrad') explicitly grants an exemption. Answer: Only if an additional sign explicitly says Ausgenommen Allradfahrzeuge with winter tyres. Why not the others: They are automatically exempt by federal decree without signs, Exempt only if driving uphill but not when descending and Exempt if towing a trailer equipped with disc brakes do not reflect statutory Austrian regulations.

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