Escape lane
Information signsSign no. 4.24OSR art. 47
What the sign says
A lane marked with red and white chequers, followed by an arrester bed where a driver can stop the vehicle if the brakes fail.
The exam trap
It sits at the foot of long descents, where overheated brakes give out. Going down in the gear you would climb in saves you from needing it.
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.