Recently, an incident of vehicle brake failure caused by severe wear of brake pads has attracted widespread attention from all sectors of society. It is reported that the vehicle involved in the accident had its brake system not tested for a long time, resulting in complete wear and tear on one side of the brake pads. Fortunately, the driver promptly detected and avoided a more serious accident. Experts point out that as an important component for ensuring safe driving of vehicles, the condition of brake pads is directly related to driving safety. Therefore, it is recommended that car owners regularly check the wear of brake pads and replace them in a timely manner to ensure driving safety.