The invention relates to an electronically controlled braking system with redundant functions, and discloses an electronically controlled braking system for unmanned commercial vehicles, which consists of a main ADV controller, a backup ADV controller, a main battery pack, a backup battery pack, Front dual-channel pressure control module, rear dual-channel pressure control module, brake chamber, spring brake cylinder, ring gear, wheel speed sensor, gas pipeline for connection, and wire harness; two sets of ADV controllers belong to the vehicle The controller is powered by an independent battery pack. The front and rear dual-channel pressure control modules are integrated with a controller chip module, four sets of two-position two-position normally closed solenoid valves, two sets of relay valves to speed up the response of the service brake, and two Group air pressure sensor. The invention can ensure that the vehicle will not exit the electronic control braking in the case of any single failure by adopting dual electronic control circuits, dual power supplies and dual CAN communication, effectively ensuring the braking safety of the unmanned vehicle, and can meet the requirements of L5 Level unmanned level of braking system requirements.