Properly functioning brake systems are crucial to safe commercial motor
vehicle (CMV) operation. CMV brakes are designed to hold up under tough
conditions, but they must be inspected and maintained carefully and consistently
so they operate and perform properly throughout the vehicle’s life. Brake Safety
Week is an annual outreach and enforcement campaign designed to improve
commercial vehicle brake safety throughout North America.
Brake Safety Week – September 6-12, 2015 – is part of the Operation Airbrake program sponsored by CVSA in partnership with the U.S. Department of Transportation’s Federal Motor
Carrier Safety Administration (FMCSA). During the week-long brake safety
campaign, CMV inspectors will conduct brake system inspections (primarily Level
IV Inspections) on trucks and buses throughout North America to identify
out-of-adjustment brakes and brake-system violations.
Brake-related violations comprise the largest percentage (representing 46.2
percent during Roadcheck 2014) of all out-of-service violations cited during
roadside inspections. Improperly installed or poorly maintained brake systems
can reduce the braking capacity and stopping distance of trucks and buses, which
poses a serious risk to driver and public safety.
Brake inspections conducted during Brake Safety Week include inspection of
brake-system components to identify loose or missing parts, air or hydraulic
fluid leaks, worn linings, pads, drums or rotors, and other faulty brake-system
components. Antilock braking systems (ABS) malfunction indicator lamps also are
checked. Inspectors will inspect brake components and measure pushrod stroke
when appropriate. Defective or out-of-adjustment brakes will result in the
vehicle being placed out of service.
Additional inspections may include some Level I Inspections and, in ten
participating jurisdictions, overall vehicle braking efficiency will be tested
using performance-based brake testing (PBBT) equipment. These systems include a
slow speed roller dynamometer that measure total vehicle weight and total brake
force, from which braking efficiency is calculated. The minimum braking
efficiency for trucks is 43.5 percent, required by U.S. federal regulation and
the CVSA Out-of-Service Criteria.
Outreach and educational efforts by CMV inspectors, participating motor
carriers and others in the industry also take place during Brake Safety Week and
are integral to the success of the campaign.
In 2014, 13,305 vehicles were inspected during Brake Safety Week
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