How to get a USDOT number
Registration runs through the Unified Registration System under 49 CFR 390.201, on a single form. The part worth reading carefully is not how to get the number — it is the update schedule attached to it, which is keyed to the digits of your own number and catches people out.
Who has to register
49 CFR 390.201(b)
The rule reaches further than the phrase “for-hire” suggests. It covers each motor carrier — and it names private carriers, exempt for-hire carriers and non-exempt for-hire carriers explicitly — along with intermodal equipment providers, brokers and freight forwarders. Hauling your own goods does not put you outside it. Paragraph (g) carries the exceptions, and it is worth reading rather than assuming you are in it.
One filing, Form MCSA-1 through the URS online application, does three jobs: it identifies the operation to FMCSA for safety oversight, it obtains operating authority where that is required, and it obtains a hazardous materials safety permit where that applies.
If you came looking for Form MCS-150, it is a different form and it appears in a different part of the regulation — which names which.
The update is not two years from when you registered
The update is due every 24 months, but the month and the year are both derived from your USDOT number rather than from your registration date.
The last digit sets the month. A number ending in 3 files by the last day of March; one ending in 0 files by the last day of October.
The next-to-last digit sets the year. If it is odd, the update is filed in odd-numbered years. If it is even, even-numbered years.
49 CFR 390.201(d)(3)
Which month your number gives you
| USDOT number ends in | File by the last day of |
|---|---|
| 1 | January |
| 2 | February |
| 3 | March |
| 4 | April |
| 5 | May |
| 6 | June |
| 7 | July |
| 8 | August |
| 9 | September |
| 0 | October |
What has to go on the truck
49 CFR 390.21(b) and (c)
The marking rule is measurable rather than approximate, which is what makes it enforceable at a roadside inspection.
- The legal name or a single trade name of the carrier, as listed on Form MCSA-1 or MCS-150
- The identification number issued by FMCSA, preceded by the letters USDOT
- On both sides of the vehicle
- In letters that contrast sharply in colour with their background
- Readily legible in daylight from 50 feet away while the vehicle is stationary
- Kept and maintained so it stays that legible
The 50-foot rule is the one to actually test. A decal that reads perfectly from the cab door can fail it, and the standard is daylight, stationary, 50 feet — not whether the inspector can make it out up close.
If any name other than the operating carrier appears on the vehicle, 390.21(b)(3) requires the operating carrier’s name to be shown with the information above and preceded by wording identifying it as the operator.
Source: 49 CFR 390.201 and 390.21, retrieved from the Electronic Code of Federal Regulations at ecfr.gov. Quoted as a reference, not legal advice. Registration is made through FMCSA directly; no fee is quoted here because 390.201 does not set one.
Already have a number? Look up any USDOT record, or read what the rules require once you are running: hours of service and inspection reports.