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Question

Difficulty: HardParking, Standing, and Stopping Regulations

A driver is securing a motor vehicle along the right side of an inclined rural roadway facing uphill. The edge of the road has an uncurbed dirt shoulder and no raised concrete curb. In this scenario, which direction must the driver turn the front wheels to prevent the vehicle from rolling into active traffic if the parking brake fails?

  1. Sharply to the right, toward the shoulder or edge of the roadAnswer
  2. B
    Sharply to the left, toward the center of the travel lane
  3. C
    Straight ahead, aligned parallel with the edge of the shoulder
  4. D
    Sharply to the left, provided the transmission is left in neutral

Answer

Sharply to the right, toward the shoulder or edge of the road
When parking facing uphill on a road without a curb, turning the front wheels to the right ensures that if the vehicle's braking system fails, gravity will roll the vehicle backward off the paved roadway and onto the shoulder, away from moving traffic.

Step-by-Step Solution

1
Identify the roadway grade and edge condition.
The vehicle is facing uphill on a roadway without a raised curb.
The presence or absence of a physical curb determines whether the wheels should be turned away from or toward the road edge.
2
Evaluate the trajectory of the vehicle during mechanical failure.
If wheels are turned left without a curb, gravity will cause a vehicle facing uphill to roll backward into the path of traffic.
Without a raised curb to catch the back edge of the front tires, turning left creates a severe hazard.
3
Select the safest steering angle.
Turning the front wheels to the right causes the rear of the vehicle to swing off the road onto the shoulder if it rolls backward.
Directing the rolling path away from the travel lane prevents collisions with other road users.

Key Concept

Uphill Parking Without a Curb
Estimated Time:1m 30s
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Topics

Parking, Standing, and Stopping Regulations

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