Question 564 in the bank

What is the meaning of the following traffic sign?

A round blue sign with a thin white border showing the white number 55. Meaning: Road for motor vehicles that are permitted and capable of driving at least the speed indicated in the sign (in k.p.h).
  1. It is forbidden to exceed the speed indicated in the sign (in k.p.h).
  2. Correct answer: Road for motor vehicles that are permitted and capable of driving at least the speed indicated in the sign (in k.p.h).
  3. Speed limit of 55 k.p.h.
  4. It is forbidden to drive slower than the speed indicated in the sign (in k.p.h).

Why this is the answer

The correct answer in the official bank: Road for motor vehicles that are permitted and capable of driving at least the speed indicated in the sign (in k.p.h).

A round blue sign with a white number defines which vehicles may use the road: only motor vehicles that are capable of and permitted to drive at least the speed shown. It is not a maximum speed limit, which appears on a white round sign with a red border. It also does not forbid ever driving slower, since traffic conditions may require slowing down.

Topic: Traffic signs. The bank marks it for these classes: Light truck (C1), Heavy truck (C), Bus (D), Motorcycle (A), Tractor (1), Private car (B).