ALAS-BASE RECORD INTERFACE. FINAL STATUS REPORT

The Highway Base Record and the Accident Location and Analysis System files of the Iowa Department of Transportation both contain extensive data. Interfacing the two files would provide safety related information that would be very useful in the identification and correction of accident problem locations, roadway features and design types. Three types of interface concepts were evaluated: (1) Link-node concept; (2) Grid-coordinate concept; and (3) Route-mile-reference concept. Of the three, the route-mile-reference concept provides the most potential for an effective and efficient interface system. It is estimated that interfacing only the more heavily traveled roads, such as the federal-aid system, would provide coverage of over 80% of the accidents and travel. This coverage could be accomplished by interfacing only 23% of the statewide mileage. A pilot study, in which interface compatibility was developed for a portion of federal-aid mileage in Story County, was conducted. It was concluded from the pilot study that the route-mile-reference concept is a feasible approach to interfacing the two files.

Language

  • English

Media Info

  • Features: Appendices; Figures; Tables;
  • Pagination: 69 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00627109
  • Record Type: Publication
  • Report/Paper Numbers: Proj No. 80-05-01, Task 9
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Mar 18 1993 12:00AM