Evaluation of Methods for Determining Horizontal Road Design Data Using an Instrumented Vehicle Equipped with Satellite Differentially Corrected GPS

The Safe, Accountable, Flexible, and Efficient Transportation Equity Act: A Legacy for Users (SAFETEA-LU) was signed into effect on August 10, 2005 creating a positive agenda for increased safety on the nation’s highways. The legislation established a requirement that each state implement a new Highway Safety Improvement Program (HSIP) providing data-driven decision-making for safety improvement expenditures and support for evaluations of safety improvements with empirical results. In preparation for these requirements, the Federal Highway Administration developed a suite of new safety analysis tools to help State Departments of Transportation identify safety problems and potential countermeasures. Consequently, the tools have introduced a new set of requirements for safety data, such as detailed road design and comprehensive volume data. Unfortunately, many states currently lack the data elements and database linkages required by the new analysis tools. In response to the road design data needs, this research evaluated a low-cost method for determining horizontal road design data using an instrumented vehicle equipped with satellite differentially corrected GPS by OmniStar; thus, by-passing the need to conduct field surveys or manually extract data from historic design drawings. Two rural two-lane roadway segments were studied. Researchers tested methods to obtain and automatically extract design data and compare with design drawings. The analysis revealed that the automatically extracted data closely matched the data in the design drawings. In addition, researchers identified several issues associated with the acquisition and use of the design drawings for safety analysis, further supporting the need for efficient and effective data collection techniques.


  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; References; Tables;
  • Pagination: 21p
  • Monograph Title: TRB 86th Annual Meeting Compendium of Papers CD-ROM

Subject/Index Terms

Filing Info

  • Accession Number: 01044784
  • Record Type: Publication
  • Report/Paper Numbers: 07-3367
  • Files: BTRIS, TRIS, TRB
  • Created Date: Feb 8 2007 8:03PM