Every commercial motor vehicle must be inspected every 12 months by a qualified inspector who has training or certification to inspect and maintain commercial motor vehicles. The term commercial motor vehicle includes each vehicle in a combination vehicle. For example, for a tractor semitrailer, full trailer combination, the tractor, semitrailer, and the full trailer (including the converter dolly if so equipped) must each be inspected.
A motor carrier must not use a commercial motor vehicle unless each component identified in Appendix G of 396 subchapter B has passed an inspection at least once during the preceding 12 months, and documentation of such inspection is on the vehicle. Your specific State may have additional requirements regarding vehicle inspections. Please check with your respective State for additional inspection requirements.