Welcome Commercial Motor Carriers

We appreciate the significant role our commercial motor carriers play in helping to make Montana roadways safe for all travelers while preserving taxpayer investment in Montana’s highway system. You do this every time you adhere to state and federal commercial motor carrier laws, rules, and regulations.

On this site you’ll find the information you need to keep abreast of the latest news, laws, and regulations. You’ll also find convenient services such as online permitting, road conditions, and more. If there’s something you can’t find, please let us know.

Motor Carrier Services, MDT

Need a DOT number?

Contact FMCSA.

FMCSA Support

FMCSA has set up a new phone line for support with the FMCSA Portal to better assist motor carriers.

FMCSA Portal Registration Call Center
Monday thru Friday, 8:00 am to 8:00 pm, EDT.

Questions about the Drug and Alcohol Clearinghouse can call or use the contact link.
FMCSA Drug and Alcohol Clearinghouse Help Line
844-955-0207 | Website

MCS Hiring Information

Begin your career as an MCS Officer...

Montana Size and Weight Information

Montana Size & Weight Certification

Montana Size & Weight Plan