Protecting the lives, property, and constitutional rights of people in Idaho since 1919.

DOT Numbers

New regulations require only carriers whose GVWR or combination GVWR is greater than 26,001 to have and display DOT numbers. This applies only to intrat (in state) carriers.

Gross Vehicle Weight
Commercial vehicles with a GVWR of 26,001 or greater, or which transport more than 8 passengers, or haul hazardous materials requiring placards, are required by Rule 19 of the Idaho Motor Carrier Rules to have an assigned DOT number. This number identifies the company.

Carriers that operate ONLY in the state of Idaho are considered Intrastate carriers. Commercial vehicle carriers that operate in and/or outside the state of Idaho are Interstate carriers.

Intrastate and Interstate Carriers
Commercial carriers whose GVWR is greater than 26,001, that operate only within the State of Idaho and are not transporting regulated commodities are exempt by Idaho code. Intrastate carriers can be subject to medical card and log book requirements. View the complete related administrative rules for more information.

Commercial carriers whose GVWR is greater than 10,001 and operate outside the state of Idaho (interstate carriers) can be required to complete log books and carry medical cards. For more information see the Code of Federal Regulations.

Apply for an USDOT Number
The Federal Motor Carrier Safety Administration issues Interstate DOT numbers to motor carriers that operate outside the state of Idaho. Carriers can apply on line at:

To apply for an intrastate (in state only) DOT Number, please print the application and mail or fax the application to:

Commercial Vehicle Safety

700 S, Stratford Dr.

Meridian, ID 83642

Fax (208) 884-7192

Application for Intrastate DOT number

Idaho State Police Headquarters
700 S. Stratford Drive, Meridian, ID 83642