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:

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

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

For more Roadcheck results, please click here.