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49 CFR • Driver & Carrier Compliance
49 CFR Regulations & FMCSA Compliance Guide
Search federal motor carrier regulations by citation, violation, equipment defect, or everyday question. FixDQ helps drivers and motor carriers find the applicable rule, understand what it covers, and reach the official federal source.
Plain-Language Search
Search using everyday trucking and inspection terminology.
Exact Citation Lookup
Find sections and paragraphs by their CFR citation.
Current and Historical Versions
Review available source dates when regulation history exists.
Find the right starting point
Browse Commercial Vehicle Regulations by Topic
Choose a common compliance area to open a focused search in the full federal regulations workspace.
Driver Qualifications
Medical fitness, qualification files, and driver eligibility requirements.
Search this topicCDL and Licensing
Commercial licensing standards, endorsements, restrictions, and duties.
Search this topicHours of Service
Driving limits, rest periods, sleeper berth rules, and exceptions.
Search this topicELDs and Records of Duty Status
Electronic logs, supporting documents, malfunctions, and log records.
Search this topicVehicle Equipment
Required parts and accessories for safe commercial vehicle operation.
Search this topicBrakes and Air Systems
Brake components, warning systems, adjustment, and air-loss requirements.
Search this topicTires and Wheels
Tread depth, tire condition, wheel components, and safe operation.
Search this topicInspection, Repair, and Maintenance
Periodic inspections, maintenance records, defects, and repairs.
Search this topicCargo Securement
Performance standards and securement rules for commercial vehicle cargo.
Search this topicHazardous Materials
Federal requirements related to hazardous materials transportation.
Search this topicDrug and Alcohol Requirements
Testing programs, prohibited conduct, records, and return-to-duty rules.
Search this topicCarrier Safety and Compliance
Motor carrier responsibilities, records, operations, and safety duties.
Search this topicFrom question to source
How to use FixDQ regulations
Describe the problem
Search with a citation, defect, violation, or everyday phrase.
Review the matching regulation
Compare possible results and open the relevant section or paragraph.
Confirm the official source
Review the source date and follow the official eCFR link.
Federal compliance reference
Understanding 49 CFR and FMCSA regulations
Title 49 of the Code of Federal Regulations contains federal transportation rules. Within that title, federal motor carrier safety regulations address many commercial motor vehicle operations, drivers, motor carriers, equipment, and records. The rule that applies can depend on the vehicle, operation, cargo, and driver, so a focused search is often more useful than browsing an entire title from the beginning.
Search by citation or everyday terminology
You can enter a known citation, such as 393.75, or describe a roadside inspection violation, vehicle defect, document, or question in familiar language. FixDQ passes the query to its regulation search workspace, where you can compare matches and open the relevant section or paragraph.
Common motor carrier safety requirements
Frequently searched areas include hours-of-service regulations, driver qualification requirements, vehicle inspection requirements, equipment standards, repair and maintenance, cargo securement, and carrier recordkeeping. Topic filters help narrow results without changing the federal text.
Know which source you are reading
Federal regulations, FMCSA guidance, CVSA out-of-service criteria, and state laws serve different purposes. FixDQ explanations help users find and understand material, but they are not the official rule, legal advice, or a guarantee of DOT compliance. CVSA criteria are not the text of 49 CFR.
Confirm the current federal source
Regulations can change. Review the source date shown in the search workspace and follow the official eCFR link before acting on a result. Historical versions can provide context, while the current official federal source should be used to confirm the rule in effect.
Frequently asked questions
49 CFR regulation search FAQ
What is 49 CFR?
Title 49 of the Code of Federal Regulations contains federal rules related to transportation. Its parts include safety requirements that apply to commercial drivers, motor carriers, and commercial motor vehicles.
Which 49 CFR regulations apply to commercial drivers and motor carriers?
The applicable rules depend on the operation, vehicle, cargo, driver, and jurisdiction. Common areas include driver qualifications, hours of service, vehicle equipment, inspection and maintenance, cargo securement, and hazardous materials.
Can I search without knowing the exact citation?
Yes. FixDQ accepts everyday terms such as air leak, medical card, 30-minute break, brakes, or annual inspection, as well as exact citations such as 49 CFR 393.75.
Can I search by violation or vehicle defect?
Yes. Describe the violation, equipment issue, or inspection term, then review the matching federal regulation results to identify the relevant rule.
Are FixDQ explanations the official regulation?
No. FixDQ provides a search and explanation experience. The regulatory text and official eCFR source remain the authority, and users should confirm the current source before relying on a result.
Where can I read the official federal regulation?
Regulation details in FixDQ include links to the official eCFR source so you can review the federal text and its source date.
How often can federal motor carrier regulations change?
Federal regulations can change through the federal rulemaking process. Check the source date shown with a result and confirm the current text in the official eCFR.
Federal regulation search
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