Question 387 in the bank

Which of the following traffic signs requires giving right of way in a roundabout?

Four traffic signs. 307 is a white circle with a red frame, a black arrow pointing down and a red arrow pointing up. 301 is a white inverted triangle with a red frame. 121 is a white triangle with a red frame and black arrows in a circle. 303 is a blue circle with three white arrows in a circle.
  1. 301
  2. 307
  3. Correct answer: 303
  4. 121

Why this is the answer

The correct answer in the official bank: 303

Traffic sign 303, a blue circle with white arrows in a circle, marks a roundabout and requires you to give right of way to vehicles already in it. Traffic sign 121 only warns that a roundabout is approaching, and traffic sign 301 is a general instruction to give right of way, not specific to a roundabout. Traffic sign 307 deals with meeting traffic coming from the opposite direction.

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).