What is a requirement for a parking brake system?

A parking brake system is a critical safety feature in vehicles, designed to keep the vehicle stationary, especially when parked on an incline. The requirement for a parking brake to effectively hold the car on a hill or incline ensures that the vehicle remains securely in place and prevents it from rolling away, which could lead to accidents or injury. This functionality is particularly important in preventing unintended movement when the vehicle is parked.

While one-handed operation might be an advantage for some designs, it is not a strict requirement for the safety and functionality of the parking brake. Adjustability while driving is also not necessary for a parking brake’s primary function, as it is meant to be engaged or disengaged when the vehicle is stationary. Additionally, visual appeal does not contribute to the safety or effectiveness of the parking brake system, making it irrelevant in terms of compliance and safety standards.

Thus, the requirement that a parking brake must be able to hold the vehicle on an incline underscores its essential role in vehicle safety.