445 Since vehicles are equipped with left and right side view mirrors and a rearview mirror that allows the driver to check for vehicles or objects on both sides and behind them, as well as lights to signal other drivers, it is not necessary for drivers to look over their shoulder to check before turning or changing lanes.
(A)O
(B)X

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統計： A(0), B(2), C(0), D(0), E(0) #2211448