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DOT registration – Determining if your facility needs to obtain a DOT number

If your facility ships hazardous materials, including hazardous wastes, you may be required to obtain a dot registration number from the Pipeline and Hazardous Materials Safety Administration (PHMSA), part of the Department of Transportation (DOT) by July 1st.  You can choose a registration length of 1, 2 or 3 years.  Your current registration can be checked on the PHMSA website.   

If you are covered under our Ongoing Compliance Service, your project manager will determine if you need to register and if so, will work with you to determine the appropriate term and help complete the registration. 

To figure out if your facility qualifies, you can follow the instructions on the DOT website or call us for assistance –  


History and Purpose 

The Pipeline and Hazardous Materials Safety Administration (PHMSA) decided to start keeping a close eye on how hazardous materials travel across the United States in 1992. Today, PHMSA’s regulatory framework is outlined in Title 49 of the Code of Federal Regulations (CFR), especially Part 107, Subpart G, which specifies requirements for obtaining a dot registration number, fees, and compliance processes. With this, PHMSA ensures compliance with federal hazmat regulations by supporting local organizations involved in emergency planning, training, and preparedness activities related to hazardous materials incidents. 


Are you eligible to register? Check if you meet the criteria 

If your business is involved in the transportation of hazardous materials, which can include a wide range of substances such as chemicals, radioactive materials, and explosives, you may find yourself subject to mandatory requirements and the need to obtain a dot registration number. These requirements are established to ensure the safe handling, transportation, and disposal of hazardous materials, prioritizing public safety and environmental protection. Failure to comply with these registration obligations can result in serious legal consequences and jeopardize the integrity and reputation of your business. The list below provides a guide in assessing whether your business qualifies for a registration: 

  1. Radioactive materials: Companies handling a highway route-controlled quantity of Class 7 (radioactive) material.  
  2. Explosives: Transporting more than 25 kilograms (55 pounds) of Division 1.1, 1.2, or 1.3 explosive material) in a motor vehicle, rail car, or freight container. 
  3. Toxic Inhalation Materials: Shipping more than one liter (1.06 quarts) per package of a material extremely toxic by inhalation (see 49 CFR 173.50). 
  4. Hazardous materials in bulk packaging: Handling hazardous materials in bulk packaging with specified capacities.  
  5. Placarding: Offering or transporting hazardous materials requiring placarding. 



If you would like to learn more about how the fees associated with getting a DOT registration number are used, please see the most recent program summary document on this PHMSA page.

For assistance with figuring out whether your facility should be registered or which hazardous materials/wastes are relevant for dot number registration, please reach out to us at