Out of service brake violations dropped slightly this year during the Commercial Vehicle Safety Alliance's annual, unannounced brake check day.
On May 6, CVSA-certified inspectors in 32 participating states and Canadian provinces and territories checked brakes on 6,337 commercial vehicles. Brake violations placed 14.2% of inspected vehicles out of service, which is down a full percentage point from the 15.2% last year.
Brake stroke violations placed 9.5% of vehicles out of service this year and 7.7% were taken out for brake component violations. This is compared to 9% and 8.5% respectively last year.
More than 50,000 individual wheel ends were checked in North America during the one-day event. It was found that brakes equipped with manual adjusters were 2.5 times more likely to be out of adjustment than those equipped with self-adjusting brake adjusters.