Examkin

Question

Difficulty: Very hardSpace to the Sides

You are operating a 53-foot combination vehicle in the right lane of a divided highway with two lanes traveling in your direction. The roadway ahead curves sharply to the right. A passenger car in the left lane is pacing your trailer, occupying the lateral space directly adjacent to your blind spot. Recognizing that the right shoulder is composed of soft dirt and your trailer will inherently track toward it during the curve, what is the most strategically sound maneuver to manage your space to the sides?

  1. Decelerate gently before entering the curve to clear the passenger car from your left side, allowing you to safely position your tractor closer to the left lane line to keep the trailer's rear wheels on the paved surface.Answer
  2. B
    Maintain a perfectly centered tractor position within the right lane at your current speed, relying on the standard lane width to absorb the trailer's natural off-tracking path without encroaching on the left lane.
  3. C
    Shift your tractor as close to the right edge line as possible before the curve to maximize your lateral safety cushion from the pacing car, holding this rightward position throughout the curve.
  4. D
    Enter the curve at your current speed, and if the trailer tires begin to drop onto the soft shoulder, apply the brakes firmly while steering slightly to the left to pull the trailer back onto the pavement.

Answer

Decelerate gently before entering the curve to clear the passenger car from your left side, allowing you to safely position your tractor closer to the left lane line to keep the trailer's rear wheels on the paved surface.
The correct maneuver addresses the side-by-side entrapment before the curve becomes a hazard. By decelerating early, the driver allows the pacing vehicle to pull ahead, opening up the lateral space on the left. This allows the driver to position the tractor toward the left side of the lane during the right curve, effectively countering the trailer's rightward off-tracking and keeping the rear wheels safely on the pavement.

Step-by-Step Solution

1
Identify the lateral entrapment hazard.
Recognize that the pacing car in the left lane prevents you from moving left to manage your lane position.
You cannot safely adjust for off-tracking if another vehicle is occupying your lateral space cushion.
2
Anticipate the trailer's path through the right-hand curve.
Determine that the trailer will off-track (cheat) toward the right side of the lane, risking a drop-off onto the soft dirt shoulder.
Combination vehicles inherently off-track toward the inside of a curve.
3
Resolve the side-by-side hazard proactively.
Decelerate before the curve to let the pacing car pass, opening up the left side of your lane.
Speed adjustment is the safest way to break a side-by-side entrapment before entering complex road geometry.
4
Adjust lane positioning to compensate for off-tracking.
Position the tractor slightly toward the newly opened left side of the lane during the curve.
This provides the necessary lateral clearance on the right side to keep the trailer's wheels safely on the pavement.

Key Concept

Proactive management of lateral space entrapment and compensation for trailer off-tracking on curves.
Rate this question

Topics

Space to the Sides

More questions from this topic