No motor cars
Regulatory signsSign no. 2.03OSR art. 19
What the sign says
The ban covers all multi-track motor vehicles — including, and this is the trap, motorcycles with a sidecar.
The exam trap
A solo motorcycle is not covered: its wheels are not side by side. What decides is the vehicle's geometry, not its licence category.
Study topic
Signs and road markings
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.