High mount stop lamp and brake system for vehicles

A high mount stop lamp of a vehicle, comprising:

• a LED light group;
• a power input interface, configured to connect to a vehicle power supply and integrated with a communication protocol pin to receive a mode switching signal output by a vehicle front-end host;
• a control circuit board, comprising a current limiting circuit, a flashing control circuit, and a main control unit;
• the flashing control circuit is connected to the current limiting circuit and the power input interface, respectively;
• the current limiting circuit is connected to the LED light group, and the main control unit is connected to the flashing control circuit and the communication protocol pin, respectively and configured to control the flashing control circuit to output a continuous constant current or a high-frequency on/off constant current to the LED light group according to the mode switching signal so as to drive the LED light group to switch between a constant light warning mode or a super flashing warning mode accordingly.