Water protection zone

Information signsSign no. 4.10OSR art. 46

What the sign says

The sign marks an area where a driver carrying a load liable to pollute water must take particular care.

The exam trap

The length of the stretch calling for that extra care is given on a supplementary plate — the sign does not run to the next village.

Do not confuse

Other hazardsOSR art. 15
TunnelOSR art. 45 · OCR art. 39
Dead endOSR art. 46

Study topic

Environment and eco-driving

Practise this topic All signs

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.