CDL General Knowledge TestDriving SafelyEasy
You are driving a commercial vehicle and must make a left turn at an intersection. To ensure you do not cut the corner and strike a curb or other object, what is the safest approach?
- AApproach the intersection in the left-most lane, then swing wide only if necessary during the turn.
- BBegin the turn from the center of the intersection, then adjust as needed.
- CKeep to the right side of your lane as you approach, then turn when clear.
- DSwing wide to the right before starting the turn.
Show answer & explanationAnswer & explanation
Correct answer: C. Keep to the right side of your lane as you approach, then turn when clear.
For a left turn in a large commercial vehicle, keeping to the right side of your lane as you approach the intersection allows you to make a wider, safer turn without swinging into other lanes or hitting the curb. Swinging wide to the right before the turn (A) can confuse other drivers.
Why the other options are wrong
- A. Swinging wide during the turn might still cause you to cross into other lanes, and it's better to set up for a wider turn from the approach.
- B. Beginning the turn from the center of the intersection does not provide adequate space for a large vehicle to avoid cutting the corner.
- D. Swinging wide to the right before the turn can mislead other drivers into thinking you are turning right, increasing the risk of collision.
Safe Left Turn Approach (CMV)
The proper technique for positioning a commercial motor vehicle before executing a left turn at an intersection to prevent cutting the corner.
- Approach in the left-most lane.
- Keep to the right side of that lane.
- Allows for a wider turning radius.
Memory trick: Left turn, right approach, smooth arc.