What does the 'a' behind the electronic parking brake in a car mean?

[BeauMarie]

The 'a' behind the electronic parking brake in a car refers to the Auto Hold system. The Auto Hold system is a technical application that can automatically apply the parking brake while the car is in operation. It allows the driver to avoid prolonged braking when the vehicle is stopped, and prevents unnecessary sliding of the vehicle when the automatic electronic parking brake is activated. The functions of the Auto Hold system are: 1. In situations where a short stop is needed, such as at traffic lights, the system will automatically brake the wheels after the vehicle comes to a stop to prevent rolling; 2. When starting on an uphill slope, the system will automatically brake to prevent rolling back, and will release the wheels automatically once the vehicle starts moving forward; 3. When parking and locking the car, there is no need to pull the handbrake as the system will automatically brake the wheels, though this feature is only available in certain car models.