Steep ascent
Warning signsSign no. 1.11OSR art. 8 · OCR art. 38
What the sign says
A marked climb, its gradient shown on the sign. Change down before you lose momentum, not once the engine is already labouring.
The exam trap
Meeting head-on on a slope works against intuition: the vehicle heading down reverses, unless the one climbing is near a passing place.
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.