Braking actions for failing can buses for autonomous vehicles

A non-transitory machine-readable medium having instructions stored therein, which when executed by a processor, cause the processor to perform operations, the operations comprising:

• determining a signal fault at a communication bus of an autonomous driving vehicle (ADV);
• in response to determining the signal fault, sending a brake pre-charge command to a brake system of the ADV to pre-charge a brake of the ADV;
• determining a preset tolerance time to validate the signal fault;
• in response to a time elapse of the preset tolerance time, validating the signal fault at the communication bus or determining a signal fault at another communication bus;
• and
• in response to validating the signal fault at the communication bus or determining the signal fault at the another communication bus, sending a brake command to the brake system of the ADV to engage brakes for the ADV.

A data processing system, comprising:

• a processor;
• and
• a memory coupled to the processor to store instructions, which when executed by the processor, cause the processor to perform operations, the operations including determining a signal fault at a communication bus of an autonomous driving vehicle (ADV);
• in response to determining the signal fault, sending a brake pre-charge command to a brake system of the ADV to pre-charge a brake of the ADV;
• determining a preset tolerance time to validate the signal fault;
• in response to a time elapse of the preset tolerance time, validating the signal fault at the communication bus or determining a signal fault at another communication bus;
• and
• in response to validating the signal fault at the communication bus or determining the signal fault at the another communication bus, sending a brake command to the brake system of the ADV to engage brakes for the ADV.