Brake Safety Week 2026: 15% of Inspected Trucks Parked for Brakes
By Ray Castellano · 2026-11-11 · 5 min read
The results from this year's Brake Safety Week are out, and the headline number has barely moved. Inspectors in the U.S. checked 14,165 commercial vehicles during the Commercial Vehicle Safety Alliance campaign that ran August 23–29, and 2,134 of them were placed out of service for brake violations. That is 15.1%, or a little more than one truck in seven, according to trade coverage of the CVSA results published this week by Heavy Duty Trucking and FleetOwner.
Trade reports describe that as little changed from 2025, when close to 15% of inspected U.S. vehicles were sidelined for brakes. A year of warnings, and the share of trucks that cannot leave the inspection site has stayed where it was.
The numbers
Across the U.S., Canada and Mexico, inspectors in the campaign looked at 15,528 vehicles and parked 2,369 of them, a 15.3% rate. Most of the work, 91%, was full North American Standard Level I inspections, the kind where an inspector gets under the truck.
| Measure | Vehicles | Rate |
|---|---|---|
| U.S. inspections | 14,165 | — |
| U.S. out of service for brakes | 2,134 | 15.1% |
| Canada inspections / out of service | 1,306 / 232 | 17.8% |
| Mexico inspections / out of service | 57 / 3 | 5.3% |
| All three countries | 15,528 / 2,369 | 15.3% |
| Failed performance-based brake test | 29 of 657 | 4.4% |
The performance-based brake testers, used in 12 U.S. jurisdictions, roll the truck onto a machine that measures actual stopping force. A vehicle has to reach at least 43.5% braking efficiency to pass. Twenty-nine of the 657 tested did not.
What took trucks off the road
The single biggest reason was the old one: too many brakes out of adjustment or otherwise defective. Under the CVSA out-of-service criteria, a vehicle is parked when 20% or more of its service brakes are defective. That rule alone accounted for 1,176 of the U.S. out-of-service vehicles, about half.
The rest of the list, as reported in the trade coverage of the results:
| Violation | Count |
|---|---|
| Brake hoses or tubing | 600 |
| Excessive air loss | 145 |
| Steering axle brake conditions other than linings | 119 |
| Steering axle linings | 92 |
| Drums and rotors | 141 violations, 64 vehicles out of service |
| Other brake-related | 759 |
Drums and rotors were this year's announced focus. Rusted rotors led that category with 48 violations, followed by broken drums at 36, broken rotors at 33 and metal-to-metal contact at 24. The count is small next to adjustment and hoses, but a cracked drum is the kind of defect that goes from fine to failed on a long downgrade.
Why it lands on the driver
An out-of-service order is written against the vehicle, but the driver is the one sitting at the scale house waiting for a mobile mechanic. The inspection also goes on record. Roadside inspections feed the carrier's safety scores, and three years of a driver's inspection history shows up in the Pre-Employment Screening Program report that many carriers pull before they hire.
Federal rules also put part of the burden on the person behind the wheel. Under 49 CFR 396.13, a driver must be satisfied that the vehicle is in safe operating condition before driving it. A shop that skipped a brake job does not move that duty off the driver.
What you can catch on a pre-trip
Most of the top violations are visible or audible without tools. A few minutes on the walk-around covers the bulk of them:
- Listen for air. With the system at pressure and the engine off, walk the truck and trailer. A hiss at a glad hand, a hose fitting or a chamber is an air-loss violation waiting to be written.
- Run the air-loss check. Fully charged, brakes released, engine off: hold a full brake application and watch the gauge for a minute. Write up a drop that is more than your truck's limit, and do not argue it away.
- Look at the hoses. Chafing where a line rubs a frame rail or crossmember, cracked rubber, bulges and kinks are what inspectors find. Hoses and tubing were the second-biggest category this year.
- Check the slack. Pushrod travel is how adjustment gets measured. If one brake has noticeably more stroke than the others, or an automatic slack adjuster keeps needing manual adjustment, something underneath is wrong. Report it rather than cranking it back.
- Look at drums and rotors. Visible cracks, heavy rust ridges, blue heat marks and shiny metal where lining should be are all worth a write-up.
- Do not skip the steering axle. Steer brakes had more than 200 out-of-service violations combined between linings and other conditions.
If you find a defect, write it on the inspection report and tell dispatch before you roll. That paper trail matters if you are later told to take the truck anyway.
What is next
CVSA has already scheduled the next campaign. Brake Safety Week 2027 is set for April 18–24, which moves it from late summer to spring. The alliance also runs an unannounced Brake Safety Day each year, so the warning window for that one is zero. The full results tables from past campaigns are posted on CVSA's brake safety campaign results page.
Frequently asked questions
When was Brake Safety Week 2026?August 23–29, 2026. The results were released in November.
How many trucks were put out of service?In the U.S., 2,134 of 14,165 inspected vehicles, or 15.1%. Across the U.S., Canada and Mexico, 2,369 of 15,528, or 15.3%.
What was the most common reason?The 20% defective-brakes criterion, which accounted for 1,176 of the U.S. out-of-service vehicles. Brake hose and tubing violations were next, at 600.
Does a brake out-of-service order go on my record as a driver?The order is against the vehicle, but the inspection is part of the roadside history that carriers can see in a PSP report, which covers three years of inspections.
When is the next Brake Safety Week?April 18–24, 2027, according to CVSA's announced schedule.