Motus replaced FMCSA registration in May. One change matters more than the rest.

FMCSA switched off its legacy registration systems on 14 May 2026 and replaced
them with Motus, at [motus.dot.gov](https://motus.dot.gov/). Motus takes over
from both the Unified Registration System and the FMCSA Portal. It is now the
only way to apply for a USDOT number or operating authority, and the only way
to manage one you already hold.

Most of the coverage has been a checklist: make a Login.gov account, verify
your identity, find your registrations. That is worth doing and takes about
twenty minutes. But one change in Motus alters something structural about the
industry's data, and it has had almost no attention.

## New numbers are random

FMCSA now issues new USDOT numbers and new operating authority docket numbers
at random. Existing numbers are untouched — yours has not changed and will not.

For sixty years a USDOT number carried an accidental second meaning. They were
handed out in sequence, so the number told you roughly when a carrier
registered. A seven-digit number beginning with a 4 was new. A six-digit number
was an old firm. Nobody designed that signal, but the whole industry read it.

Brokers used it to spot a carrier that registered last week. Fraud teams used
it because a cluster of consecutive numbers filed from the same address is a
red flag that a sequential system hands you for free. Insurers priced against
it. A great deal of software has a rule in it, written down or not, that treats
a higher number as a newer carrier.

All of that stops working for anything registered after 14 May 2026. Not
gradually — immediately, for every new entrant.

FMCSA did this deliberately and for a good reason. Sequential numbers are
guessable, and guessable identifiers are useful to people committing
registration fraud: you can predict what the next block looks like, and you can
tell at a glance which numbers are new enough to be thinly checked. Randomising
removes that.

The consequence is that a number is now only an identifier. If you want to know
when a carrier registered, you have to look it up. Anything currently inferring
age from the digits will keep producing an answer, and the answer will be
wrong — which is worse than an error, because nothing will alert you.

## What is actually required of you

Anyone needing a USDOT number or operating authority uses Motus. That is wider
than carriers: brokers, freight forwarders, intermodal equipment providers,
cargo tank facilities, and the businesses that file on their behalf, including
BOC-3 process agents and insurance companies.

The first visit has two steps that the old portal did not.

You create or link a **Login.gov** account. This is the government's shared
sign-in, so if you already use it for another federal service, that account
works.

You then verify your identity through **IDEMIA**, which captures and checks an
identity document. This confirms a real, named person is behind the account.
You do it once. It is the step people get stuck on, because it needs a
government-issued ID and a device with a camera, and it is worth doing before a
filing deadline rather than during one.

The **MCS-150 biennial update** has not gone away. Every active carrier still
files one every two years regardless of size or cargo, and still files within
30 days of a significant change to fleet size or operations. What changed is
where: it happens in Motus now.

## The verification behind it

Motus adds checks that the old system did not run at all.

FMCSA now operates a business verification service against new registrations.
It validates the legal name, the principal place of business address, the
ownership structure and company officials, and the entity's standing against
state and federal requirements.

That list is worth reading twice, because it is precisely the set of fields
that registration fraud has always abused. A fictitious carrier needs a name,
an address and an officer. Under the old system all three were typed in and
accepted. Checking them at the point of registration is a larger change than
the new interface, and it is the part that should reduce the number of
fabricated carriers entering the register in the first place.

It applies going forward. It does not retroactively verify the millions of
records already in the system, and it does not by itself resolve the entries
already there with a mail drop for an address or an officer shared across
dozens of firms.

## What we would watch

Three things will show whether this worked, and none of them is visible yet.

**Whether new-entrant fraud falls.** The verification is aimed at fabricated
registrations. Whether it displaces them or stops them is an empirical question
answerable in a year, by comparing new registrations that go inactive quickly
against the pre-Motus rate.

**Whether the data keeps flowing.** FMCSA's public files — the company census,
licensing and insurance — are what every downstream service is built on,
including ours. A replaced registration system is a replaced pipeline behind
those files. Format and cadence changes are worth watching for.

**Whether anyone notices the numbering.** The randomisation is a quiet change
with a long tail. Some tool somewhere is going to sort by USDOT number to find
the newest carriers, and keep returning a confident, meaningless list.

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*Motus is FMCSA's system; everything above is drawn from the agency's own
published material and the Federal Register notice, all linked. This is an
explainer, not advice — for your own registration, the agency's Resources Hub
is the authority.*