149 Prior to changing lanes, drivers are required to:
(A) honk their horn
(B) use their turn signal
(C) either use their turn signal or use their arm to signal other drivers.
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統計: A(0), B(0), C(3), D(0), E(0) #2214610
統計: A(0), B(0), C(3), D(0), E(0) #2214610