A certain restriction is shown in the following picture. What is the reason for the restriction?

1. Correct answer: Overtaking is restricted due to limited field of vision.
2. Overtaking is restricted due to speed limit.
3. Overtaking is restricted for commercial vehicles only, due to traffic congestion.
4. The restriction is within the speed limit.

WhyThe sign prohibits overtaking because of the limited field of vision. It is a general ban, not only for trucks.