Question 523 in the bank

Which of the following road signs permits U-turns only?

Four round blue signs: 303 three arrows in a circle; 210 a straight arrow and a U-turn arrow to the left; 212 a single U-turn arrow; 209 a straight arrow and a U-turn arrow to the right.
  1. 210
  2. Correct answer: 212
  3. 303
  4. 209

Why this is the answer

The correct answer in the official bank: 212

Sign 212 shows only a U-turn arrow, so it permits U-turns only. Signs 210 and 209 also have a straight arrow next to the U-turn arrow, so they also permit continuing straight. Sign 303 has arrows in a circle and no U-turn arrow, so it is not the sign that permits U-turns only.

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).