447 When the left-turn traffic light comes on, drivers are required to either slowly turn left or make a U-turn to prevent accidents from happening.
(A)O
(B)X
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統計: A(2), B(0), C(0), D(0), E(0) #2211450
統計: A(2), B(0), C(0), D(0), E(0) #2211450