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Top DOT Violations and How to Avoid Them

Learn about the top DOT violations, how to avoid costly fines, and stay compliant with FMCSA regulations. Keep your fleet safe and running smoothly.


The U.S. Department of Transportation (DOT) enforces strict regulations to ensure safety on the roads. Non-compliance can lead to costly fines, operational disruptions, and an increased risk of accidents. Understanding the most common DOT violations is key to maintaining compliance and keeping your fleet running efficiently.

1. Hours of Service (HOS) Violations

HOS regulations, set by the Federal Motor Carrier Safety Administration (FMCSA), govern how long drivers can operate a commercial vehicle before taking mandatory breaks. Common violations include:

  • Exceeding daily driving limits

  • Failing to take required rest breaks

  • Not using or improperly using an electronic logging device (ELD)

To stay compliant, carriers should ensure all drivers use FMCSA-approved ELDs and regularly review their logs. More information on HOS regulations can be found on the FMCSA website.

2. Vehicle Maintenance Violations

DOT requires regular inspections and proper maintenance of commercial vehicles. Frequent violations include:

  • Faulty brakes

  • Defective lights

  • Worn-out tires

  • Oil and fluid leaks

Routine inspections and preventive maintenance programs can reduce the risk of these violations. Carriers should adhere to the DOT’s Periodic Inspection Standards to ensure compliance. Learn more about maintenance requirements from the DOT guidelines.

3. Driver Qualification Violations

A significant portion of violations come from improper driver documentation and hiring practices, including:

  • Incomplete driver qualification files

  • Expired commercial driver’s licenses (CDLs)

  • Failing drug and alcohol testing requirements

Regularly auditing driver qualification files and ensuring compliance with FMCSA regulations can help avoid these violations. Check out the FMCSA’s Driver Qualification Requirements for more details.

4. Cargo Securement Violations

Improperly secured cargo can lead to accidents, rollovers, and costly citations. Some common cargo-related violations are:

  • Failing to use proper tie-downs

  • Overloading or unbalanced loads

  • Not following hazardous material (HAZMAT) securement rules

Reviewing FMCSA’s Cargo Securement Rules and training drivers on proper loading techniques can prevent such violations.

5. Drug and Alcohol Testing Violations

DOT requires strict compliance with drug and alcohol testing for commercial drivers. Frequent violations include:

  • Failure to conduct pre-employment drug testing

  • Not maintaining random testing programs

  • Allowing drivers to operate after a failed drug test

For more information, review the DOT’s Drug & Alcohol Testing Program.

6. Logbook and Recordkeeping Violations

Accurate recordkeeping is essential for DOT compliance. Common mistakes include:

  • Incomplete or missing logs

  • Falsified records

  • Not maintaining supporting documents

Implementing a robust compliance management system and conducting routine audits can help minimize these violations.

7. Medical Certification Violations

Drivers must maintain an up-to-date medical certificate to operate commercial vehicles. Common issues include:

  • Expired medical certificates

  • Not reporting medical conditions that affect driving

  • Failure to carry proper documentation

Visit the FMCSA’s Medical Requirements Page for the latest guidelines on medical certification.

Avoiding DOT Violations with Proactive Compliance

Staying ahead of DOT regulations requires a proactive approach, including:

  • Regular driver training

  • Frequent vehicle inspections

  • Comprehensive compliance audits

  • Investing in compliance management technology

Final Thoughts

Understanding and preventing common DOT violations can save your company thousands of dollars in fines, protect your reputation, and enhance road safety. If your organization needs help navigating DOT compliance, Sentry Road offers expert solutions to keep your operations running smoothly. Contact us today to learn how we can assist with regulatory compliance, training, and more.

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