The Oklahoma Highway Patrol has released the most common violations identified during commercial motor vehicle inspections conducted in June, providing a snapshot of the issues troopers continue to encounter during roadside enforcement.
According to the agency, Size and Weights troopers perform thousands of inspections each year, checking critical safety systems including brakes, tires, steering, suspension, lighting, and cargo securement.
OHP says identifying violations before they contribute to a crash remains one of the primary goals of its inspection program.
Brake Violations Led the List
Brake-related issues accounted for several of the most frequently cited violations during June inspections.
The most common violation involved brakes that were out of adjustment, with troopers documenting 186 violations. Another 95 inspections found defective brakes affecting at least 20 percent of a vehicle’s service brakes, while 93 violations involved automatic air brake adjustment system failures. Troopers also recorded 92 violations for audible air brake leaks.
The concentration of brake-related violations highlights the importance of regular brake inspections and maintenance before vehicles return to the road.
Inspection Records and Registration Remain Common Issues
Mechanical problems were not the only issues identified during June inspections.
Troopers issued 169 violations for operating without documentation of a required periodic inspection, making it the second most common violation overall. State registration and tag violations ranked third with 141 citations.
Maintaining current inspection records and ensuring registration documents are up to date can help drivers avoid violations during roadside inspections.
Tire Condition and Weight Compliance Continue to Matter
Tire maintenance and axle weight compliance also remained recurring enforcement issues.
Troopers cited 123 vehicles for tires that were underinflated or leaking. Weight violations also appeared twice among the top ten, with 124 vehicles exceeding axle weight limits by 1 to 2,500 pounds and another 91 exceeding limits by 2,501 to 5,000 pounds.
Proper weight distribution and routine tire inspections can help reduce the likelihood of both equipment failures and enforcement actions.
Top 10 Commercial Vehicle Violations in June
According to the Oklahoma Highway Patrol, the ten most common violations identified during June inspections were:
Brakes out of adjustment – 186
Missing required periodic inspection documentation – 169
State registration or tag violations – 141
Axle weight 1 to 2,500 pounds over the limit – 124
Underinflated or leaking tires – 123
Defective brakes affecting at least 20 percent of service brakes – 95
Automatic air brake adjustment system failures – 93
Audible air brake leaks – 92
Axle weight 2,501 to 5,000 pounds over the limit – 91
Speeding 6 to 10 mph over the posted speed limit – 91
OHP noted that the vast majority of commercial drivers are committed to operating safely and said roadside inspections are intended to help ensure commercial vehicles remain safe for everyone traveling Oklahoma’s highways.
The TDUSA editorial team creates practical, driver-focused content covering trucking news, industry updates, safety, regulations, and career information for professional truck drivers across the United States. Each article is built to reflect real-world experience, industry developments, and information drivers can use on and off the road.
Last Updated: July 23, 2026
Source: The Trucker
Image Source: GHP
