Final answer:
A motor carrier must file a Motor Carrier Identification Report (MCS-150) biannually, which is essential for maintaining a current USDOT number and for FMCSA to accurately assess safety performance.
Step-by-step explanation:
A motor carrier must file a Motor Carrier Identification Report (MCS-150) biannually, meaning every two years, according to the Federal Motor Carrier Safety Regulation (FMCSR) requirements. It is specifically required for carriers who have a USDOT number. This report provides updated information regarding the carrier, such as contact details, number of vehicles, miles traveled, and other details pertinent to their operation.
Filing the MCS-150 is important for safety audits, compliance reviews, and crash investigations. The FMCSA uses this information to calculate the carrier's safety score, which affects their insurance rates and ability to operate. It is the responsibility of the motor carrier to ensure that their information is current and accurate to avoid penalties.