Safety benefits of stability control systems for tractor-semitrailers.
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Safety benefits of stability control systems for tractor-semitrailers.

Filetype[PDF-2.05 MB]


  • English

  • Details:

    • Publication/ Report Number:
    • Resource Type:
    • Geographical Coverage:
    • OCLC Number:
      695038349
    • Edition:
      Final report; Sept. 2006-May 2008.
    • Contracting Officer:
    • NTL Classification:
      NTL-FREIGHT-Trucking Industry ; NTL-SAFETY AND SECURITY-SAFETY AND SECURITY ; NTL-SAFETY AND SECURITY-Vehicle Design ;
    • Abstract:
      This study was conducted by the University of Michigan Transportation Research Institute

      (UMTRI) under a Cooperative Agreement between NHTSA and Meritor WABCO to examine

      the performance of electronic stability control (ESC) systems, and roll stability control (RSC)

      systems for heavy-truck tractor-semitrailers. The study is based on the analysis of independent

      crash datasets using engineering and statistical techniques to estimate the probable safety

      benefits of stability control technologies for 5-axle tractor-semitrailer vehicles. The

      conventional approach for assessing the safety benefits of vehicle technologies is to analyze

      crash datasets containing data on the safety performance of vehicles equipped with the

      technology of interest. Because the deployment of the stability technologies for large trucks is

      in its infancy, national crash databases do not yet have a sufficient amount of factual data that

      can be directly linked to the performance of the technology. Therefore a novel method of

      examining the potential benefits of these systems was used. Crash scenarios that could likely

      benefit from the technologies were selected from national crash databases and the probable

      effectiveness of each technology was estimated. The analysis in this study did not have the

      advantage of examining representative crash datasets that contain identifiable data from vehicles

      equipped with the technology. Therefore, the analysis was based on probable outcome

      estimates derived from hardware-in-the-loop simulation, field test experience, expert panel

      assessment, and fleet crash data and these methods were used to estimate the safety benefits

      from the national crash data population.

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