You are required to obtain a USDOT number if you have a vehicle that:
- Is used to transport the types and quantities of hazardous materials requiring a safety permit in intrastate commerce (see 49 CFR 385.403).
OR
- Has a gross vehicle weight rating or gross combination weight rating, or gross vehicle weight or gross combination weight, of 4,536 kg (10,001 pounds) or more, whichever is greater; or
- Is designed or used to transport more than 8 passengers (including the driver) for compensation; or
- Is designed or used to transport more than 15 passengers, including the driver, and is not used to transport passengers for compensation.
AND is involved in Interstate commerce:
Trade, traffic, or transportation in the United States—
- Between a place in a State and a place outside of such State (including a place outside of the United States).
- Between two places in a State through another State or a place outside of the United States; or
- Between two places in a State as part of trade, traffic, or transportation originating or terminating outside the State or the United States.
Apart from federal regulations, some states require their intrastate commercial motor vehicle registrants to obtain a USDOT Number. These states include:
- Alabama
- Alaska
- Arizona
- California
- Colorado
- Connecticut
- Delaware
- Florida
- Georgia
- Hawaii
- Idaho
- Indiana
- Iowa
- Kansas
- Kentucky
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Missouri
- Montana
- New Jersey
- New York
- Nebraska
- Nevada
- North Carolina
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Puerto Rico
- South Carolina
- Texas
- Utah
- Washington
- West Virginia
- Wisconsin
- Wyoming
