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.
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Corporate Authors:
Ohio State University, Columbus
Engineering Experiment Station, 2070 Neil Avenue
Columbus, OH United States 43210Ohio Department of Transportation
25 South Front Street
Columbus, OH United States 43215Federal 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
- TRT Terms: Acceleration lanes; Aerial photography; Aerial surveying; Costs; Data collection; Data reduction; Deceleration lanes; Evaluation; Freeways; Highway traffic control; Highway transportation; Photogrammetry; Statistical distributions; Traffic flow; Traffic safety; Traffic surveys; Vehicle detectors; Vehicles; Velocity
- Geographic Terms: Ohio
- Old TRIS Terms: Aerial surveys; Land change
- Subject Areas: Design; Finance; Highways; Operations and Traffic Management; Vehicles and Equipment;
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