No trailers except semi-trailers and centre-axle trailers
Regulatory signsSign no. 2.09.1OSR art. 19
What the sign says
A variant of the previous one: it spares semi-trailers and centre-axle trailers, whose behaviour through bends is more predictable.
The exam trap
A conventional caravan is neither: it has its own rear axle and an articulated drawbar, so the ban applies to 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.