By Haul Handbook editorial team· Updated Sep 28, 2026
The Maine intrastate rule
Federal USDOT registration depends on the vehicle and operation. The rows below show what Maine requires for carriers operating inside the state. Our state DOT number requirements table holds the same answer for every state. A field reading "Not confirmed" means this guide has no verified figure for that field.
Maine draws the intrastate line higher than the federal 10,001 pounds. 16-222 C.M.R. ch. 4, sec. 4(B-1)(1), the Maine State Police motor carrier safety rule, exempts intrastate vehicles with a gross vehicle weight rating of 10,000 to 26,000 pounds that are not buses and do not transport hazardous materials from 49 C.F.R. 390.19 (the USDOT number filing) and 390.21 (the marking rule). The BMV page dates the exemption to July 19, 2015 and states it for GVWR or gross combination weight rating. A vehicle over 26,000 pounds needs the number even in intrastate commerce, and a bus or a vehicle hauling hazardous materials needs it at any weight; sec. 4(A)(1) of the same rule allows no exemption for placarded hazardous materials carriers.
Maine requires a USDOT number for purely intrastate operation above the 26,000-pound line. The Maine State Police adopted the federal rules on obtaining and displaying the number for intrastate vehicles under its authority in 29-A M.R.S. sec. 555 and sec. 555-A (the latter lets the Bureau of State Police require a motor carrier to have and display a USDOT census number). The rule applies to private and for-hire carriers alike, since sec. 1(C) defines a motor carrier as a for-hire or private carrier. Questions on the exemption go to the Maine State Police Commercial Vehicle Enforcement Unit at 207-624-8909. The BMV page also points to 29-A M.R.S. sec. 556; that section, read this pass, exempts government construction and maintenance vehicles and subsidized passenger carriers from the motor carrier registration subchapter but expressly keeps sec. 555-A in force for them, so the weight exemption rests on the Chapter 4 rule. Since June 6, 2012 Maine no longer asks for a USDOT number at registration from a commercial vehicle registrant that is not a motor carrier: an owner-operator who never runs under its own USDOT number or operating authority, or a registrant that owns vehicles only to rent or lease them to motor carriers. IRP registrants must still supply the USDOT number of every carrier responsible for the safety of their vehicles.
No separate Maine carrier number
Maine issues no state carrier number and no intrastate operating authority. The operating authority license statute, 29-A M.R.S. sec. 552, was repealed by P.L. 2009, ch. 598, and the BMV USDOT page directs carriers that need an identifier to the FMCSA-issued USDOT number. With no state credential, there is nothing for a USDOT number to be a prerequisite to. The closest state link is IRP: the Maine IRP rule requires the USDOT number of the carrier responsible for safety on every original application and prints it on each cab card.
Where a Maine carrier enrolls
Registration goes to the agency that issues each credential; the federal process is covered step by step in our guide to getting a USDOT number. Filing services resell these same applications, so the rows below name the direct channel first.
Create a user profile, complete identity verification, and create a company account in Motus to apply for a USDOT number and the registrations your operation needs. Claim your existing USDOT record in Motus using the company official’s Login.gov email, then manage registrations or apply for additional authority. See the Motus account guide before opening or claiming your record.
- USDOT number
- Directly with FMCSA through its online registration. No Maine agency issues the USDOT number. Since December 12, 2015 every new motor carrier must use FMCSA's online process, and since September 30, 2016 every carrier must also update its USDOT information online; BMV Motor Carrier Services can no longer help with either. (registration site)
- USDOT application fee
- The BMV USDOT page states no fee and sends carriers to FMCSA; Maine adds no state charge for the number. FMCSA takes questions at 800-832-5660.
- State agency
- No state enrollment. FMCSA issues the number; the Maine State Police Commercial Vehicle Enforcement Unit (207-624-8909) answers questions on the intrastate rule, and BMV Motor Carrier Services (207-624-9000 ext. 52131, mcsadmin@maine.gov) handles the state credentials that ask for the number.
- State portal
- There is no Maine portal or application for the USDOT number. A Maine carrier registers with FMCSA online, then gives the number to the BMV when it opens IRP, IFTA or fuel tax accounts. The for-hire insurance filing with the BMV Operating Authority Unit is the only other state motor carrier filing, and our Maine intrastate authority page covers it.
There is no Maine portal or application for the USDOT number. A Maine carrier registers with FMCSA online, then gives the number to the BMV when it opens IRP, IFTA or fuel tax accounts. The for-hire insurance filing with the BMV Operating Authority Unit is the only other state motor carrier filing, and our Maine intrastate authority page covers it.
The number carries FMCSA's update duty: the IRP rule requires the MCS-150 to be updated as FMCSA requires, generally every two years, for every USDOT number on an original, renewal or supplement IRP application.
Once a number is active, anyone can pull the public record behind it; our DOT number lookup guide shows how to read that snapshot the way brokers and enforcement do, and the MC number lookup reads the live record back for a number you type in.
The same number carries your safety history. Every roadside inspection written against it feeds the CSA percentiles a broker's vetting platform reads after it checks your authority and insurance, and a violation recorded in error is corrected through DataQs, not by the state agency that issued the credential above.
The state registration triggers behind it
These are the operations that pull a carrier into Maine's own motor carrier registration, where the DOT number rules above attach. The full credential, fees, and insurance filings live on the Maine intrastate authority page.
Where the number fits in the Maine launch
Registration numbers come early: they exist before insurance binds and before the first load. For the full order of operations, from entity to authority to plates, work through start a trucking company in Maine, and keep the Maine trucking hub handy for the rest of the state's credentials.