Mountain postal road

Information signsSign no. 4.05OSR art. 45 · OCR art. 38

What the sign says

A mountain road served by public line-service vehicles. Where passing or overtaking is difficult, you must follow the signs and instructions given by their drivers.

The exam trap

One of the rare cases where another driver gives you an order you must obey. The duty lasts until the end-of-mountain-postal-road sign.

Do not confuse

Steep ascentOSR art. 8 · OCR art. 38
Steep descentOSR art. 8
Road narrowsOSR art. 7

Study topic

Right of way and junctions

Practise this topic All signs

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.