摘要: |
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 in envisioned to incorporate five analysis modules; policy review design consistency, accidents analysis, traffic analysis, and driver/vehicle 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 basis for implementing some of the required functionality are reviewed. Data sources for the various IHSDM modules, with concentration of the driver performance module, are also reviewed. A prototype interface for IHSDM, focusing primarily on the driver/vehicle module, is described. A prototype interface for IHSDM, focusing primarily on the driver/vehicle module, is described. Commercial CADD systems and design application software elements that serve as integral elements of IHSDM are reviewed. |