Why should you wait a moment before starting a left turn at an intersection?

A.Waiting is only for pedestrians
B.To let oncoming traffic clear and to be sure your trailer's path will not cut off vehicles beside or behind you
C.To let the air pressure build
D.So the signal turns yellow

Correct answer

B. To let oncoming traffic clear and to be sure your trailer's path will not cut off vehicles beside or behind you

Why

A combination needs a larger, longer gap than a car. Starting too early forces mid-turn stops that leave the trailer blocking lanes.

Manual topic: Combination Vehicles - Turning and Off-Tracking · From the Combination Vehicles practice bank (CV-092).