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['Hazmat']
['Hazmat License/Permit/Registration']
10/05/2026
State Info
Relationship to Federal Regulations - District of Columbia
The District of Columbia has adopted the federal Hazardous Materials Regulations (HMR), Title 49, Code of Federal Regulations (CFR), Parts 171-180, as well as Part 387 and Parts 390-397 of the Federal Motor Carrier Safety Regulations, as amended. These regulations apply to applicable interstate and intrastate motor carrier operations within the District.
These regulations generally apply to self-propelled or towed vehicles operated by common, contract, or private carriers when:
- The gross vehicle weight rating (GVWR) or gross combination weight rating (GCWR) exceeds 10,000 pounds;
- The vehicle is designed to transport 16 or more passengers, including the driver; or
- The vehicle transports hazardous materials in quantities requiring placarding.
The Metropolitan Police Department (MPD) is the primary enforcement agency for hazardous materials transportation requirements within the District of Columbia.
['Hazmat']
['Hazmat License/Permit/Registration']
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