Examkin

Question

Difficulty: HardParking, Standing, and Stopping Regulations

A vehicle is being secured along the right shoulder of a rural two-lane road with a steep downward grade and no concrete curb. Which wheel positioning procedure should be followed to prevent the vehicle from rolling into moving traffic if the parking brake fails?

  1. Turn the front wheels rightward toward the edge of the road.Answer
  2. B
    Turn the front wheels leftward toward the center of the roadway.
  3. C
    Keep the front wheels centered straight ahead parallel with the shoulder.
  4. D
    Turn the front wheels sharply leftward to lock the steering column across the lane.

Answer

Turn the front wheels rightward toward the edge of the road.
When parking facing downhill on a grade without a curb, turning the front wheels rightward toward the edge of the road ensures that if the vehicle starts to roll forward, it will travel off the pavement and away from passing traffic.

Step-by-Step Solution

1
Identify the slope direction and curb presence.
The vehicle is positioned facing downhill (downward grade) on a road shoulder lacking a curb.
Wheel positioning rules depend on grade direction and whether a curb is available to physically catch the tires.
2
Determine the safety objective for brake failure on a uncurbed downhill grade.
Without a curb to block rolling tires, the front wheels must be turned so that forward rolling motion carries the vehicle off the roadway into the shoulder ditch or embankment.
Turning wheels rightward toward the edge of the road prevents the vehicle from drifting left into active travel lanes.

Key Concept

Hill Parking Regulations and Wheel Angles
Estimated Time:1m 30s
Rate this question

Topics

Parking, Standing, and Stopping Regulations

More questions from this topic