Abnormal sound of rear taillight after room melting

1. At low speed, the driving noise is extremely low, and there is not enough warning to pedestrians and non-motor vehicles around the vehicle, which may easily lead to misjudgment and traffic accidents.

2. Therefore, when the national standard requires electric drive and the vehicle speed is 20km/h, the vehicle needs to send out a warning sound with a certain intensity through an external sound device to remind pedestrians to drive and reduce the probability of accidents. This kind of sound is normal.