Mandatory direction to the left

Regulatory signsSign no. 2.33OSR art. 24

What the sign says

The mirror image of the previous one: the driver must turn left before reaching the sign.

The exam trap

Four blue arrow signs look alike and say different things: mandatory direction, turn, pass an obstacle, go straight on. What tells them apart is where the order takes effect.

Do not confuse

Mandatory direction to the rightOSR art. 24
Turn leftOSR art. 24
Pass obstacle on the leftOSR art. 24

Study topic

Signs and road markings

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.