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Question

Difficulty: MediumParking, Standing, and Stopping Regulations

When securing a motor vehicle parked on a downward slope along a street bounded by an adjacent curb, which directional setting for the front tires will prevent the vehicle from rolling into traffic if its mechanical brakes fail?

  1. Angled in toward the curb edge so the tire would catch against the concrete curbAnswer
  2. B
    Angled outward toward the center lane so the vehicle rolls away from the sidewalk
  3. C
    Positioned directly parallel with the roadway edge without angling the steering wheel
  4. D
    Pointed straight ahead while relying solely on transmission parking gear locks

Answer

Angled in toward the curb edge so the tire would catch against the concrete curb
When facing downhill on a grade with a curb, turning the front wheels toward the curb ensures that forward motion causes the right front tire to strike and lodge against the curb, halting motion safely.

Step-by-Step Solution

1
Identify the slope direction and roadside boundary conditions
The vehicle is facing downhill alongside a raised curb.
Vehicle orientation and presence of a curb dictate wheel direction rules.
2
Determine the rolling trajectory if braking mechanisms disengage
Gravitational pull will roll the vehicle forward down the grade.
The front wheels must be angled so forward movement instantly drives the front tire into the curb structure.
3
Select the proper wheel orientation
Tires must be turned right/inward toward the curb.
This uses the curb as a mechanical block to hold the vehicle safely.

Key Concept

Hill Parking Wheel Placement Regulations
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Topics

Parking, Standing, and Stopping Regulations

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