DOT Number Registration: How to Get a USDOT Number Step-by-Step
Every commercial motor vehicle operating in interstate commerce needs a USDOT number. This guide covers who needs one, how to apply, the difference between a USDOT and MC number, and what to do after registration.
Under 49 CFR §390.19, motor carriers operating commercial motor vehicles in interstate commerce that meet FMCSA applicability thresholds must register with FMCSA and obtain a USDOT number. There is no FMCSA filing fee for a USDOT number, but the registration process still brings ongoing compliance responsibilities.
FMCSA uses your USDOT number to track every inspection, crash, audit finding, and safety rating tied to your operation. It's your identifier in SMS, in MCMIS, and on SAFER — the public record that shippers, brokers, and insurance underwriters check before deciding to work with you.
Who Needs One
| Vehicle Type | Threshold |
|---|---|
| Trucks and trailers | GVWR or GCWR of 10,001 lbs or more |
| Passenger vehicles (for compensation) | Designed to transport 9 or more passengers |
| Passenger vehicles (not for compensation) | Designed to transport 16 or more passengers |
| Hazmat vehicles | Any size, if transporting materials requiring a placard |
California, Texas, New York, and a handful of other states require USDOT numbers for intrastate CMV operations too. Don't assume you're exempt just because you don't cross state lines — check your state's requirements.
Add a truck over 10,001 lbs? Register it before it rolls. Operating without a USDOT number is a violation regardless of how short the trip was.
USDOT vs. MC Number
Two separate registrations. For-hire carriers typically need both.
| Registration | Purpose | Who Needs It | Cost |
|---|---|---|---|
| USDOT Number | Federal identification for safety oversight, inspections, audits, crash data | All CMVs in interstate commerce meeting thresholds | Free |
| MC Number | Operating authority to haul for-hire in interstate commerce | For-hire carriers transporting passengers or regulated commodities | $300 application fee |
Private carriers hauling their own goods don't need an MC number. For-hire carriers do. And operating for hire with only a USDOT number is a federal authority violation — don't assume the USDOT covers it.
How to Register
Before you start the application, have your legal business name, EIN, business address, type of operation (for-hire, private, or exempt), cargo types, fleet size, and driver count ready. The form moves faster when you're not hunting for this mid-application.
- Go to portal.fmcsa.dot.gov
- Create an account or log in
- Select "Apply for New USDOT Number"
- Complete the MCS-150 form — it's part of the same application
- If you need operating authority (MC number), select the applicable authority type
- Review everything and submit
USDOT number issues same day for online applications.
If You're Also Applying for MC Authority
The MC process takes longer and has more moving parts:
| Step | Action | Timeline |
|---|---|---|
| File BOC-3 | Designate process agents via a blanket agent service | 1–3 business days |
| File proof of insurance | Your insurer files Form BMC-91 or BMC-34 with FMCSA | Varies by insurer |
| Pay application fee | $300 per authority type | At application |
| Protest period | FMCSA publishes your application for 10 calendar days | 10 days |
| Authority granted | If no protests and all filings complete | ~20–25 business days total |
“The most common delay we see in new authority applications is the insurance filing. Carriers apply for the USDOT and MC number on day one, but their insurer takes two weeks to file the BMC-91. Start the insurance process before you apply, not after.”
What Comes After Registration
The number is the easy part.
Your legal or trade name and USDOT number must be displayed on both sides of each self-propelled CMV, in contrasting lettering that is legible from 50 feet during daylight hours under 49 CFR §390.21. Get minimum insurance on file. Set up a drug and alcohol testing program if you employ CDL drivers. Build DQ files for every CDL driver before they drive.
Ongoing obligations:
| Requirement | Frequency | Regulation |
|---|---|---|
| MCS-150 biennial update | Every 2 years and when required to keep registration information current | 49 CFR §390.19 |
| UCR registration | Annually | 49 USC §14504a |
| Annual MVR review for all drivers | Annually | 49 CFR §391.25 |
| Random drug/alcohol testing | Ongoing (50% drug / 10% alcohol annually) | 49 CFR Part 382 |
| Clearinghouse limited queries | Annually for all CDL drivers | 49 CFR §382.701 |
| Vehicle annual inspections | Annually for each CMV | 49 CFR §396.17 |
| IFTA | Quarterly (if applicable) | State-administered |
| IRP | Annually (if applicable) | State-administered |
New Entrant Safety Audit
New entrant motor carriers are subject to FMCSA safety monitoring during the first 18 months of operation, which may include a New Entrant Safety Audit. Serious deficiencies can lead to corrective-action requirements and, if not resolved, loss of operating authority. Prepare like it's a full compliance review: DQ files complete, drug testing records in order, maintenance documentation current. Being new doesn't excuse missing paperwork.
Insurance Minimums
| Carrier Type / Cargo | Minimum Required Insurance |
|---|---|
| General freight (non-hazmat, 10,001+ lbs) | $750,000 |
| Household goods carriers | $750,000 |
| Oil transport (petroleum products) | $1,000,000 |
| Other hazardous materials | $5,000,000 |
| Passenger carriers (16+ seats) | $5,000,000 |
| Passenger carriers (under 16 seats) | $1,500,000 |
| Freight brokers (surety bond or trust fund) | $75,000 |
Federal minimums satisfy FMCSA. Most shippers want $1M to $2M on general freight. Know the difference before you start bidding on loads.
Common Registration Mistakes
Applying for USDOT without an MC number when you're for-hire. Operating for hire with only a USDOT number is a federal authority violation.
Filing the BOC-3 late. No BOC-3 on file means no active MC authority. File it at the same time as your OP-1 application, not after.
Missing vehicle display requirements. Two-inch lettering minimum, contrasting color, both sides of every CMV. Inspectors cite this.
Ignoring the MCS-150 biennial update. Miss the deadline and FMCSA deactivates your number. See how to file the MCS-150 update.
Business structure changes. Converting from sole proprietorship to LLC requires a new USDOT number. The number is tied to the legal entity, not the individuals or the trucks.
Foley helps new and established carriers build and maintain compliant operations: drug and alcohol testing, driver qualification files, and ongoing FMCSA compliance monitoring.
Revision record
| Date | Author | Change |
|---|---|---|
| 2026-03-17 | Foley Compliance Team | Initial publication |
| 2026-03-23 | Foley Compliance Team | Full rewrite for voice and detection compliance |
| 2026-03-23 | Foley Compliance Team | Rewrite pass 2 for detection compliance |