A tractor-trailer is approaching a signalized four-way intersection to make a left turn onto a two-lane street. To prevent the trailer wheels from cutting the inside corner and striking vehicles stopped at the traffic signal, what steering path must the driver follow?
- AInitiate the turn immediately upon crossing the entry crosswalk line to minimize travel time within the intersection.
- BSwing the tractor toward the right shoulder before turning left to increase the vehicle's turning arc.
- Proceed straight until reaching the center of the intersection before beginning the turn.Answer
- DStraddle the left lane divider line before entering the intersection to widen lateral clearance.
Answer
Proceed straight until reaching the center of the intersection before beginning the turn.
Reaching the center of the intersection before turning the steering wheel is the standard procedure for large commercial vehicles. Because the trailer's rear wheels follow a shorter path than the tractor's steer tires (off-tracking), driving forward into the center before initiating the turn ensures the trailer clears the inside curb and avoids oncoming vehicles waiting at the cross-street stop line.
Step-by-Step Solution
Key Concept
Left-Turn Intersection Positioning and Off-Tracking Mitigation
Estimated Time:1m 0s