DOT inspection requirements in Maryland

Maryland State Police's Commercial Vehicle Enforcement Division enforces truck and bus safety. Maryland adopts federal rules for vehicles at 10,001 lb. The federal annual by a qualified inspector is the standard, and Maryland-registered trucks over 10,000 lb, tractors, trailers and buses also need a state preventive maintenance inspection every 12 months or 25,000 miles.

Need a DOT inspection near you in Maryland?

Maryland uses the federal annual model, so you don't need a station. Bright Inspect inspects your truck where it's parked. $99 for one vehicle, with fleet discounts from 2 units.

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Maryland at a glance

Maryland commercial vehicle inspection rules at a glance. Last reviewed: September 11, 2026.
ItemMaryland
Lead agencyMaryland State Police, Commercial Vehicle Enforcement Division (CVED)
Federal rulesBroadly adopted for intrastate carriers (COMAR 11.21.01)
Who's covered intrastate10,001 lb or more for trucks, combinations and buses; federal passenger triggers; placarded hazmat
Annual inspectionEvery 12 months, by a qualified inspector
FMCSA-accepted state programNo
Preventive Maintenance ProgramMaryland-registered covered vehicles: every 12 months or 25,000 miles, whichever comes first

Compare Maryland with other states on the state requirements hub, or see which states run their own inspection programs.

Who regulates commercial vehicles in Maryland?

The Maryland State Police Commercial Vehicle Enforcement Division enforces motor carrier safety and runs the state's main truck weigh and inspection facilities. It also enforces the Preventive Maintenance Program. The MDOT Motor Vehicle Administration handles registration and runs school vehicle inspections.

Does Maryland follow federal rules, and what are the intrastate thresholds?

Yes. Maryland adopts federal Part 396, with state amendments and exemptions, in COMAR 11.21.01.10. Coverage starts at 10,001 lb for trucks, combinations and buses, with the federal passenger triggers and placarded hazmat at any weight. Maryland has its own exemptions and special vehicle classes.

Who is covered in Maryland, interstate vs. intrastate. Last reviewed: September 11, 2026.
OperationWho's covered
Interstate10,001 lb or more, plus federal passenger and hazmat triggers (49 CFR 390.5)
Intrastate (Maryland only)10,001 lb or more for trucks, combinations and buses; more than 15 passengers including the driver; placarded hazmat

What annual or periodic inspections does Maryland require?

The federal annual covers every covered truck, tractor, trailer, converter dolly and bus at least every 12 months. Maryland adds its Preventive Maintenance Program for Maryland-registered vehicles, which doesn't replace the federal annual, and a separate school vehicle inspection program.

Periodic inspections in Maryland. Last reviewed: September 11, 2026.
InspectionApplies toHow oftenRule
Federal annualCovered CMVs and each unit in a combination12 months49 CFR 396.17; COMAR 11.21.01.10
Preventive Maintenance ProgramMaryland-registered Class E trucks over 10,000 lb, Class F tractors, qualifying Class G trailers, Class M multipurpose passenger vehicles and Class P buses12 months or 25,000 miles, whichever comes first; 6 months or 12,500 miles for dump vehicles 18 or more years oldCOMAR 11.22; Transportation Article 23-303
School vehicle inspectionMaryland school buses and school vehiclesOne Type A each 12 months, plus two Type B a year at least 60 days apartCOMAR 11.19.04

Who can perform the inspection, and is a technology-based inspection accepted?

The federal annual can be done by an inspector qualified under 49 CFR 396.19: a qualified carrier employee, a commercial garage, a fleet lessor, a truck stop or a similar business. That's the model Bright Inspect is designed for.

For the Preventive Maintenance Program, the owner must inspect and maintain the vehicle or have it done, and Maryland doesn't require a licensed state inspection station. The form must be acceptable to the State Police. We're still confirming that a technology-based inspection and our form are accepted for the program. Check with the Maryland State Police CVED directly, or ask us before relying on our report for it.

For school vehicles, the owner or the owner's representative may do the Type A inspection, and Type B for vehicles not owned by or contracted to a Board of Education. Vehicles over 12 years old need their Type A from a licensed inspection mechanic at an authorized station.

What records and stickers does Maryland require?

Keep the federal annual report 14 months, with proof on the vehicle. For the Preventive Maintenance Program, keep vehicle identification and inspection, repair and maintenance records with dates and mileage for 2 years, and carry evidence of the current inspection in or on the vehicle. A Maryland title-transfer safety certificate doesn't automatically count as the federal annual.

Maryland's regulations set the Preventive Maintenance interval at 25,000 miles. If you see a different mileage figure in MVA registration material, check with the State Police directly.

More on how long to keep DOT inspection records.

Rules for tow trucks, school buses and passenger carriers in Maryland

Special vehicle rules in Maryland. Last reviewed: September 11, 2026.
VehicleRule
Tow trucksWe're still confirming Maryland tow truck rules. Check with the Maryland State Police CVED directly.
School vehiclesAcceptance inspection before first registration as a school vehicle, then Type A (form EP-213) and Type B (form EP-203) inspections filed through the MVA (MDOT MVA school vehicle inspections)
Buses and passenger vehiclesClass P buses and qualifying Class M vehicles are in the Preventive Maintenance Program; passenger carriers file daily driver vehicle inspection reports

What happens if your inspection is expired at a roadside stop in Maryland?

Maryland State Police officers, hazardous materials inspectors and Public Service Commission inspectors can inspect commercial vehicles and Preventive Maintenance records. Federal rules let an officer cite you under 49 CFR 396.17(c) when proof of a current annual inspection isn't on the vehicle; it carries a CSA severity weight of 4. The officer gives the driver an inspection report. The carrier must certify that listed violations were corrected and return it within 15 days, and keep a copy for 12 months (49 CFR 396.9). Fines are set by state law. A roadside inspection doesn't replace the annual unless it meets 49 CFR 396.23.

We're still confirming roadside fines for a missing annual inspection in Maryland. Check with the Maryland State Police CVED directly.

Stopped without proof of a current annual? See what to do when your inspection expired or failed at roadside and what happens if your annual inspection is expired. Nobody can promise to remove a violation or change a safety score; what fixes the problem going forward is a current inspection and a complete record.

Maryland DOT inspection FAQs

You don't need a station. Maryland uses the federal annual model, so a qualified inspector can inspect your truck anywhere. Bright Inspect does it where your truck is parked.

A state requirement for Maryland-registered trucks over 10,000 lb, tractors, qualifying trailers and buses to be inspected and maintained every 12 months or 25,000 miles, whichever comes first. It sits on top of the federal annual and doesn't replace it.

Only if it meets both: the federal inspection standards, inspector qualifications and paperwork, and a form acceptable to the Maryland State Police. Ask us before relying on one report for both.

Yes, for trucks, trailers and buses under the federal annual model Maryland uses.

Official sources for Maryland

Last reviewed: September 11, 2026