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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Form MCS-150B and Instructions - Combined Motor Carrier Identification Report and Hazardous Materials Safety Permit Application

MCS-150B Form.pdf (890.64 KB)

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 that companies define the type of business operation (Motor Carrier, Broker, Shipper, Freight Forwarder and/or Cargo Tank Facility) that 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 both 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 that they are subject to both registration requirements—USDOT Number —and Interstate Operating Authority.

We encourage entities to update their records online. First-time applicants must register via the Unified Registration System. Subsequent updates can be made via FMCSA’s legacy systems, or, for applicants without Internet access, FMCSA can mail instructions, forms, and other materials designed to assist in the off-line registration process. For assistance, call FMCSA at 1-800-832-5660 or submit your question via our web form.

Filing Options

There are two options for filing the necessary forms to update a USDOT Number:

  • Completing and filing the required MCS-150B forms online, or
  • Completing a printed copy and mailing to the FMCSA

FMCSA strongly encourages applicants to use the electronic online process since it has built-in edit checks and simple yes-and-no questions for easy, accurate completion. It is also significantly faster than updating by mail. The estimated time to complete the form online is approximately 20 minutes.

Option 1: Updating Online (recommended)

  • We encourage you to print all related form instructions prior to completing the online forms.
  • To complete and submit form(s), go to: Register Online

Option 2: Updating by Mail

  • Submit all required forms together.
  • Once the application is completed, FMCSA suggests making a copy for the company’s files.
  • Mailed applications, on average, take four to six weeks processing time.

Mail completed application form(s) to:

Federal Motor Carrier Safety Administration
Office of Registration and Safety Information (MC-RS)
Attn: MCS-150B Update
1200 New Jersey Avenue SE
Room W65-206 
Washington, DC 20590

Note: Applications that are incomplete, unreadable, or unsigned will be rejected and returned via mail, delaying the update of the company’s records

Last updated: Saturday, April 27, 2024