Form MCS-150 and Instructions - Motor Carrier Identification Report

About this Form

Please note: After December 12, 2015, MCS-150 forms can ONLY be used to update a USDOT number, not for initial registration with FMCSA. First-time applicants must use the Unified Registration System (URS). For more information about URS or to apply for the first time, click here.

The Federal Motor Carrier Safety Administration (FMCSA) registration process requires companies to define the type of business operation (Motor Carrier, Broker, Shipper, Freight Forwarder, and Cargo Tank Facility) they plan to establish. FMCSA’s responsibilities include monitoring and enforcing compliance with the Federal Motor Carrier Safety Regulations (FMCSR) and the Hazardous Materials Regulations (HMR) governing safety and financial responsibility.

The Agency’s focus on both concerns is reflected in the dual path of its current registration process. Companies may find they are subject to registration requirements – USDOT Number – and Interstate Operating Authority.

These instructions assume that the applicant has determined that a USDOT Number is required to update the US DOT number registration and that the MCS-150 form must be submitted. Again, this form can only be used to update existing registrations as of December 12, 2015.

  • Changed your business address
  • Changed your company name
  • Changed your operating authority
  • Become a hazardous materials carrier
  • Added to or reduced the number of vehicles in your fleet
  • Make any other changes to your business

Any time you change your trucking business and operations, you should file an MCS-150 update.