详情

Field Testing & Analysis of Braking Performance of In-Service Trucks

项目名称：	Field Testing & Analysis of Braking Performance of In-Service Trucks
摘要：	The National Highway Traffic Safety Administration (NHTSA) is on the verge of requiring that the stopping distance of new trucks be reduced up to 30 percent below current regulations, depending on the vehicle type. However, this regulation does not address the braking performance of trucks after they have entered into service. Further, the current in-service vehicle inspection procedure, as well as the required annual inspection of commercial motor vehicles (CMVs), may be missing a critical component of braking capability, that of the effectiveness of after-market or replacement brake linings, which have a direct impact on stopping capability. Inspection procedures for CMVs cannot assess the friction available at the pad versus drum (or disc) interface, and there are no data available on the criticality to safety of this aspect of the inspection process. The objective of this project is to obtain a data set of the stopping capability of in-service CMVs. This will be accomplished through the performance-controlled stopping distance and deceleration tests and performance-based brake tests of in-service heavy trucks. The data set will provide a current assessment of the distribution of the braking capabilities and performance required of in-service vehicles that can be compared with that of new vehicles. These stopping performance tests will be complemented by visual inspections of the brake system by qualified inspectors. Federal Motor Carrier Safety Administration (FMCSA) and NHTSA need these data for assessing the effectiveness of current safety standards and regulations, and to support changes to such standards and regulations, including those covering replacement brake linings. Industry has similar interest in the data to assess the importance of replacement linings and maintenance on fleet safety.
状态：	Completed
资金：	215130.00
资助组织：	National Transportation Research Center, Incorporated
项目负责人：	Petrolino, Joseph A
执行机构：	Department of Transportation<==>Heavy Duty Manufacturers Association<==>Commercial Vehicle Safety Alliance<==>Ontario Trucking Association<==>Battelle Memorial Institute
开始时间：	20080301
实际结束时间：	20090228
主题领域：	Highways；Motor Carriers；Operations and Traffic Management；Research；Safety and Human Factors