Telephone
Information signsSign no. 4.81OSR art. 62
What the sign says
The sign marks a telephone available to road users. It is a service sign from the blue series.
The exam trap
The letters SOS are added under the symbol, on the blue ground, where it is an emergency call point rather than an ordinary telephone.
Study topic
Accidents and first aid
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.