摘要: |
Assessment of large truck braking capability in the United States is traditionally done during periodic roadside inspections conducted to identify and remove from service vehicles with violations of the Federal Motor Carrier Safety Regulations (FMCSR). Following guidelines developed by the Commercial Vehicle Safety Alliance (CVSA), law enforcement officials perform hands-on inspections to check for conditions of braking system components which are known to present imminent safety hazards, e.g. brakes out of adjustment, worn linings, contaminated linings, or leaking air connections. While inspections are critically important to keep poorly maintained trucks off the Nations highways, they are a burden in lost time and revenue for drivers and operators who properly care for their trucks critical safety systems. Furthermore, inspection of wellmaintained trucks ties up law enforcement resources and reduces the time available to focus on genuinely problem vehicles. Electronically controlled braking systems (ECBS) available in the United States have onboard diagnostics that can monitor and evaluate in real-time the condition of the truck braking system without need for hands-on inspection. The USDOT supports the use of ECBS and its enabled safety technologies to reduce the number of fatalities and injuries in crashes involving heavy trucks. An opportunity exists for improved safety and productivity through the innovative use of ECBS to provide brake condition data. |