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Initial development of prototype performance model for highway design
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Initial development of prototype performance model for highway design
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    Final report
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  • Abstract:
    The Federal Highway Administration (FHWA) has undertaken a multiyear project to develop the Interactive Highway Safety Design Model (IHSDM), which is a CADD-based integrated set of software tools to analyze a highway design to identify safety issues and tradeoffs. The IHSDM is envisioned to incorporate five analysis modules: policy review, design consistency, accidents analysis, traffic analysis, and driverlvehicle analysis. Top level requirements for the IHSDM as a whole and for each of the five analyses modules are presented. Detailed design speCifications are given for the driver/vehicle module, a time-based simulation model, and for one of the major component of this module- the driver performance module. Data requirements for model development are defined, and a suggested program of research is outlined. Existing models that could serve as a basis for implementing some of the required functionality are reviewed. Data sources for the various IHSDM modules, with concentration on the driver performance module, are also reviewed. A prototype interface for IHSDM, focusing primarily on the driverlvehicle module, is described. Commercial CADD systems and design application software elements that serve as integral elements of IHSDM are reviewed.
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