About This Page

At US Carrier Filer, we know that FMCSA and DOT regulations can be confusing — especially for new carriers and owner-operators. We’ve put together this list of common questions to help you understand our services and the filing process more clearly.

If you still have questions after reading, our compliance team is happy to assist you directly.

General FMCSA & DOT Questions

A USDOT number is issued by the Federal Motor Carrier Safety Administration (FMCSA) to identify trucking companies and monitor their safety information.
You need a USDOT number if you operate a commercial vehicle that transports passengers or cargo across state lines or meets certain size and weight requirements.

An MC number (Motor Carrier Operating Authority) allows you to transport goods across state lines for hire.
You need both a USDOT and MC number if you are a for-hire carrier operating interstate.

Most filings are submitted within 24–48 hours.
FMCSA usually activates your DOT or MC number within 21 business days, depending on processing times.

The MCS-150 (Biennial Update) is a required form that updates your company’s information with FMCSA every two years.
Failure to update on time can result in fines or DOT deactivation.

The Unified Carrier Registration (UCR) is an annual registration required for carriers, brokers, and freight forwarders operating interstate.
It must be renewed every year to remain compliant.

Our Services & Process

Yes! We handle reinstatement filings for both DOT and MC numbers if they were deactivated or revoked.

Yes. FMCSA requires all carriers to keep their information current.
We can file your name or address change quickly and accurately.

You can reach us by phone, text, or email. We also have an online contact form for quick questions or filing requests.

We accept major credit and debit cards through our secure online payment system.

Support & Assistance

No problem! Our team will review your situation and recommend the correct filing — saving you time and avoiding unnecessary fees.

By keeping your filings up to date — especially your MCS-150 and UCR registration.
We can send reminders and file on your behalf to ensure full compliance.

Because filings are submitted directly to FMCSA once processed, all completed filings are non-refundable.
However, if an error occurs on our end, we will correct it at no additional charge.

Absolutely. We offer free consultations and support to help you understand what you need before starting your filing.

Final Call to Action

Still have questions? Our compliance specialists are ready to help you every step of the way.