Maryland DVIR and vehicle inspection rules

Last reviewed November 12, 2026.

This page summarizes what we could verify from official sources about how Maryland applies driver vehicle inspection and related vehicle-inspection rules. It is not a complete reprint of Maryland law.

Interstate operations

If you operate a commercial motor vehicle in interstate commerce to, from, or through Maryland, the federal Motor Carrier Safety Regulations (FMCSRs) apply, including 49 CFR Part 396 and the DVIR rules in § 396.11 and § 396.13. State rules do not replace those federal interstate requirements. Start with What a DVIR is and who must complete one.

State agency

For Maryland-specific questions, including how the rules apply to operations that stay entirely inside Maryland, contact Maryland State Police and Maryland Motor Vehicle Administration.

What official sources say about state adoption

The official Code of Maryland Regulations includes COMAR 11.21.01.02, titled “Incorporation by Reference of the Federal Motor Carrier Safety Regulations.” During this review we identified that official regulation, but we did not independently retrieve and quote its full current text here.

Intrastate operations and variations

Read the current official text of COMAR 11.21.01.02 (and the surrounding chapter) for which 49 CFR parts Maryland incorporates and for any Maryland-specific modifications. Confirm coverage with the Maryland State Police or the Motor Vehicle Administration. This page does not invent a Maryland weight threshold or DVIR exception.

What we could not independently verify from official sources in this review:

The current full official text of COMAR 11.21.01.02, including which parts are incorporated and any Maryland-specific vehicle threshold or DVIR exception.

Please confirm those points with the state agency linked on this page before relying on them.

Related federal guides

Sources

Need a printable form? DVIR.io offers free FMCSA-aligned PDF templates, including post-trip, pre-trip, bus and motorcoach, and intermodal reports.

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This page is general information only. It is not legal advice, and it is not advice on any specific DVIR or vehicle-inspection requirement. Rules can change, and how they apply depends on your operation, your vehicles, and your location. Get advice in your own area on your specific state and federal requirements. If you have a question for DVIR.io, use the contact form.