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          Cargo Tank Safety
      
      
      
        Contact Us
      Federal Motor Carrier Safety Administration
      
                    
            Hazardous Materials Division
      
                          
            1200 New Jersey Avenue SEWashington, DC 20590United States
      
          
    **Phone:** 202-385-2400**Business Hours:**9:00am-5:00pm ET, M-F
    If you are deaf, hard of hearing, or have a speech disability, please dial 7-1-1 to access telecommunications relay services.
                
                Cargo Tank Facility Registration
    

    
    
          The Cargo Tank (CT) number is assigned to facilities and/or individuals that manufacture, assemble, inspect, test, certify or perform welded repairs on cargo tanks or a cargo tank motor vehicles manufactured in accordance with a DOT specification or under the terms of an exemption.



How to update your CT registration
      
    
          Last updated: Wednesday, October 13, 2021 U.S. DEPARTMENT OF TRANSPORTATION

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