INVESTIGATION OF TRAFFIC DYNAMICS BY AERIAL PHOTOGRAMMETRY TECHNIQUES

An aerial traffic survey and data reduction system was developed for the purpose to obtain continuous traffic data on the spacing of vehicles, speed, density, volume, acceleration and deceleration, lane changes and the general behavior of vehicles on two urban freeways in Columbus, Ohio. These data were evaluated with regard to real world safety conditions in the car following, the propagation of disturbances, the stability and the quality of traffic flow. The most important discoveries made were the multilinear speed-density relationships and the hysteresis phenomenon of traffic flow which shows the changing characteristics of traffic flow during the build up phase and the recovery phase of a kinematic disturbance.

  • Corporate Authors:

    Ohio State University, Columbus

    Engineering Experiment Station, 2070 Neil Avenue
    Columbus, OH  United States  43210

    Ohio Department of Transportation

    25 South Front Street
    Columbus, OH  United States  43215

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Treiterer, J
  • Publication Date: 1975-2

Media Info

  • Pagination: 224 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00093485
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: EES-278 Final Rpt., OHIO-DOT-09-75, FCP 40T2-052
  • Contract Numbers: 14162(0)
  • Files: NTIS, TRIS, USDOT, STATEDOT
  • Created Date: Jan 14 1976 12:00AM