No trailers
Regulatory signsSign no. 2.09OSR art. 19
What the sign says
No vehicle towing a trailer may use this stretch. The towing vehicle on its own passes without restriction.
The exam trap
It targets the combination, not the trailer as such: what is banned is towing — caravan or towed bike carrier included.
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.