According to the "Regulations on Motor Vehicle Registration", if a registered motor vehicle wants to change its use nature, body color, body or frame, the owner of the motor vehicle shall apply to the vehicle management office for change registration. The assembled car belongs to modification. After modification, the performance of the vehicle has changed greatly, and the safety performance of the vehicle cannot be guaranteed. Liangshan assembled dump truck is an assembled vehicle, and its structure and performance are quite different from the original vehicle, which has potential safety hazards.