The question is understood as Which sign is not prohibited for trucks? Signal 1 is a sign that prohibits cars, tractors pulling trailers or semi-trailers (prohibiting the act of pulling trailers or semi-trailers). semi-trailers) Section 2 is a sign prohibiting tractors Section 3 is a sign banning cars (prohibiting all types of motor vehicles: including trucks).
Sea 1 and 2.
Sea 2 and 3.
All three seas.
Sea 1 and 3.
Correct answer :a
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