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Difficulty: MediumSpace for Turns

When making a left turn in a commercial vehicle, the driver should reach the center of the intersection before beginning the turn to prevent the rear wheels from off-tracking into oncoming traffic lanes.

Answer: Answer

Answer

True
Commercial driving standards require pulling out to the center of the intersection before beginning a left turn. Because trailing axles off-track inward, entering the center point first ensures the rear of the vehicle remains clear of vehicles stopped in opposing lanes.

Step-by-Step Solution

1
Analyze the spatial dynamics and wheel path geometry of a commercial vehicle during a left turn.
Because of off-tracking, the rear wheels follow a shorter path than the front steer wheels, cutting inward toward the inside of the turn.
Understanding off-tracking is required to determine proper lane positioning during intersection maneuvers.
2
Evaluate the effect of initiating the turn at the center of the intersection versus turning early.
Reaching the center before turning keeps the off-tracking path within the designated intersection clearing area rather than encroaching on oncoming lanes.
Beginning the turn too early pulls the left side and rear of the vehicle across opposing lanes where other vehicles may be waiting.

Key Concept

Intersection center positioning to control off-tracking during left turns
Estimated Time:45s
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Topics

Space for Turns

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