On Tuesday, the Commercial Vehicle Safety Alliance’s (CVSA) released the results from the year’s biggest commercial vehicle inspection effort.

This year, the CVSA’s International Roadcheck took place from May 4 — 6 throughout the U.S., Canada, and Mexico.

During the annual high-volume enforcement effort, more than 40,000 CMV inspections were performed in a 72 hour period.


The CVSA says that a total of 6,710 commercial motor vehicles and 2,080 drivers were placed out of service during Roadcheck – a 16.5% vehicle and 5.3% driver out of service rate.

This year, inspectors focused on two categories of violations during Roadcheck — Hours of Service violations and Lighting violations.

Hours of service violations were the the most cited driver out of service violation in 2021, at 41.5% of all driver out of service violations with a total of 1203 HOS violations recorded.

See the chart below for the Top 5 Driver Out of Service Violations:

  Category Number Percentage
1 Hours of Service 1,203 41.5%
2 Wrong Class License 565 19.5%
3 *Other 482 16.6%
4 False Logs 427 14.7%
5 Suspended License 132 4.6%
*Examples of “Other” driver violations include operating without the required operating authority, expired or no medical certificate, operating a commercial motor vehicle while ill or fatigued, driving while prohibited in the Drug and Alcohol Clearinghouse, etc.

Inspectors recorded a total of 1367 out of service lighting violations, accounting for 14.1% of all vehicle out-of-service violations. Lighting was the third most-cited violation during Roadcheck, after brake systems and tires.

See below for the top 5 vehicle out of service violations

  Category Number Percentage
1 Brake Systems 2,564 26.5%
2 Tires 1,804 18.6%
3 Lights 1,367 14.1%
4 Brake Adjustment 1,203 12.4%
5 Cargo Securement 1,192 12.3%

Since 1988, more than 1.7 million roadside inspections have been conducted during International Roadcheck.

For more Roadcheck results, please click here.