End of compulsory snow chains
Regulatory signsSign no. 2.57OSR art. 32
What the sign says
Chains are no longer required from this sign on. The compulsory sign is in any case removed as soon as good tyres suffice on the stretch.
The exam trap
No longer required is not the same as safe: the end of the duty says nothing about the actual road surface a few kilometres further on.
Study topic
Vehicle and technology
The signs are the official depictions by the Federal Roads Office, from the annexes of the Signalling Ordinance (SR 741.21): official works, unprotected under Art. 5 of the Copyright Act. The explanations, by contrast, are written from federal law — never taken from a third-party catalogue.