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Federal Requirements Contacts

Federal Heavy Vehicle Use Tax: Internal Revenue Service
1-800-829-1040 or
202-622-3130

US DOT Number (Form MCS-150)
Licensing/Insurance
US Department of Transportation
Federal Highway Administration
Office of Motor Carriers

202-358-7000 or
Regional Office: Indianapolis, IN
317-226-7474

US DOT Safety Regulations Information and Forms
US Department of Transportation
Federal Highway Administration
Office of Motor Carriers

1-800-832-5660 or
Regional Office: Indianapolis, IN
317-226-7474

Other State and Federal Agency Contact Information