Brake and HandBrake

[dana4056]

In Unity environment, I drive the automobile through Python API. But there's a question about the two variables. The Throttle and Brake values are output equally. The value of the brake will not stop the vehicle. On the other hand, the handbrake was able to stop the vehicle. Can you tell me how the handbrake and brake values are applied in unity? And are there any references to variables that can be found in more detail than official documents?