Brake Safety Week: 15.3% of inspected trucks put out of service for brake violations

The Commercial Vehicle Safety Alliance released results this week from its 2026 Brake Safety Week, and the headline is plain: about one in six trucks inspected had a brake problem serious enough to park it.

According to figures published November 6 by Truck News, inspectors across the U.S., Canada and Mexico checked 15,528 vehicles during the August 23 to 29 campaign and placed 2,369 out of service for brake violations. That works out to a 15.3% out-of-service rate. Put the other way, 13,159 vehicles, or 84.7%, had no brake-related out-of-service violation.

What the inspections found

The U.S. numbers drive the total. CVSA data reported by Truck News shows 14,165 U.S. inspections and 2,134 brake-related out-of-service orders, a 15.1% rate. Canada had the highest rate at 17.8% (232 of 1,306 inspections). Mexico's 57 inspections produced three out-of-service orders, too small a sample to compare.

The most common reason was the familiar one. Of the vehicles sidelined, 1,176 met the 20% defective brake criterion, which is just under half of all brake out-of-service units. CDLLife's summary of the release also lists 600 brake hose and tube violations, 145 air loss rate violations and 92 steering axle brake lining violations.

This year's special focus was drums and rotors. Inspectors recorded 141 drum and rotor violations that put 64 vehicles out of service, according to CVSA figures cited by Truck News. In states and provinces with performance-based brake testers, 657 vehicles were tested and 29 failed the 43.5% minimum braking efficiency standard, a 4.41% failure rate.

What it means for carriers

A brake out-of-service order is more than a lost hour at the scale house. The truck stays parked until it is fixed, the load is delayed or re-powered, and the violation can follow the carrier into its safety data. Because Brake Safety Week is announced in advance and the failure rate is still around 15%, the numbers suggest many defects are going unfixed even when fleets know inspectors are looking.

Drums, rotors, hoses and air lines are the items to check on every pre-trip and at every preventive maintenance interval. Broken or rusted rotors and metal-to-metal contact are visible defects that a driver can spot.

What shippers and brokers should watch

Carriers with weak maintenance records are the ones most likely to miss a pickup. Brokers vetting capacity may want to look at a carrier's vehicle out-of-service rate alongside its authority and insurance status, especially after recent court rulings put more attention on how brokers select carriers. CVSA's next Brake Safety Week is scheduled for April 18 to 24, 2027, per Truck News.