How it works
Carriers apply for a DOT number through the FMCSA's Unified Registration System. Once issued, the DOT number must be displayed on both sides of every commercial motor vehicle. The FMCSA updates the carrier's record with inspection results, crash reports, and safety ratings.
Who uses it
Every interstate motor carrier. Some states also require an intrastate DOT number.
Why it matters
No DOT number = no legal authority to operate commercially interstate. Safety scores tied to the DOT number determine insurance rates and shipper tender decisions.
In Rig Terminal
Rig Terminal pulls your DOT number and current safety posture during onboarding and surfaces CSA score changes on the Compliance dashboard.
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