DOT Number
A USDOT number is a unique identifier issued by the FMCSA to commercial motor vehicles operating in interstate commerce. It is used to track a carrier's safety information, inspections, crashes, and audits.
In Depth
Almost all commercial trucking operations require a USDOT number, whether you're an owner-operator or a large fleet. It must be displayed on the side of the vehicle in contrasting letters at least 2 inches tall.
Apply for a USDOT number at the FMCSA Unified Registration System. The number is free and typically issued immediately.
Usage Example
Example: 'Before I could get my first load, I had to display my USDOT 123456 on both sides of the cab.'
Related Terms
MC Number
An MC (Motor Carrier) number is an operating authority number issued by FMCSA that allows a carrier to transport regulated commodities for hire in interstate commerce. Required in addition to a DOT number for for-hire carriers.
FMCSA
The Federal Motor Carrier Safety Administration (FMCSA) is the U.S. government agency that regulates commercial motor vehicles. It oversees driver licensing, vehicle safety standards, Hours of Service rules, and carrier authority.
Owner-Operator
An owner-operator is a truck driver who owns and operates their own commercial truck, running freight either independently (with their own authority) or leased onto a motor carrier.
Frequently Asked Questions
How do I get a DOT number?
Apply free at the FMCSA Unified Registration System (URS) at safer.fmcsa.dot.gov. Takes 20–30 minutes.