Evaluation of Three Data Collection Techniques on Determination of Rural Two-Lane Highway Driveway Density Accident Modification Factors

The Highway Safety Manual will be a new document anticipated to provide transportation engineers with support in incorporating safety into transportation design. It is being developed under the direction of the Transportation Research Board Highway Safety Manual Task Force. The manual’s goal is to provide the best available safety knowledge in a condensed and widely usable form for designers and practitioners. A variable that heavily influences the predicted number of accidents is driveway density however driveway density is not maintained in geometric databases. The objective of the research in this paper was to explore several methods to collect driveway density information. The three data collection techniques selected included: in-field observation, video, and aerial photographs. These techniques were compared for accuracy and time requirements using two highway segments as test cases. The results of the study showed that the in-field data collection provided the best results, followed by aerial photographs with 195-ft resolution. The lower resolution and the modified video also showed some potential but were not as accurate as the other techniques. In each case, an equation was developed to relate the technique to the in-field data collection results.


  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; References; Tables;
  • Pagination: 16p
  • Monograph Title: TRB 86th Annual Meeting Compendium of Papers CD-ROM

Subject/Index Terms

Filing Info

  • Accession Number: 01044872
  • Record Type: Publication
  • Report/Paper Numbers: 07-0948
  • Files: BTRIS, TRIS, TRB
  • Created Date: Feb 8 2007 5:32PM