What is the minimum lining thickness required for a parking brake to avoid vehicle rejection?

The minimum lining thickness required for a parking brake to avoid vehicle rejection is 1/16 inch. This specification ensures that the parking brake remains effective and can adequately hold the vehicle in place when engaged. When the lining is worn down to this minimum thickness, it indicates that the brake system might still function under normal conditions, but it is critical for safe operation.

Understanding the importance of proper lining thickness is essential for maintaining effective braking systems. If the thickness falls below the specified amount, it can compromise the brake's ability to hold the vehicle securely, increasing the risk of accidents. The other options represent thicknesses that exceed the minimum requirement, indicating that a vehicle with thicker linings would not face rejection based solely on this criterion, but it is the 1/16 inch specification that is the minimum threshold to ensure safety and compliance with inspection standards.