Among the shown signs, which one specifically indicates that turning left is prohibited?

Question

DentroTest · Accepted Answer

The correct answer is This is the R-303 sign 'No left turn'. It is a prohibitory sign (circular with a red border) that forbids turning left. Golden rule: This sign also prohibits making a U-turn. Analyzing the other options: Sign 1 (P-1a) is a warning sign indicating an intersection with priority over the road on the left (you can turn if markings allow, but you have right of way). Sign 3 is a mandatory sign (circular blue), indicating the only permitted directions; it is not an explicit prohibitory sign even though it restricts other directions.

Among the shown signs, which one specifically indicates that turning left is prohibited?

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