Aerial Photographic Instrumentation System For Collection Of Complete Traffic Flow Characteristics Data For Studies In Traffic Flow And Highway Safety

Walter W. Mosher Jr.

doi:10.1117/12.953565

1 May 1972 Aerial Photographic Instrumentation System For Collection Of Complete Traffic Flow Characteristics Data For Studies In Traffic Flow And Highway Safety

Walter W. Mosher Jr.

Author Affiliations +

Proceedings Volume 0030, Photo-Optical Instrumentation: A Tool for Solving Traffic and Highway Engineering Problems; (1972) https://doi.org/10.1117/12.953565
Event: Photo-Optical Instrumentation: A Tool for Solving Traffic and Highway Engineering Problems, 1971, Los Angeles, United States

Abstract

To conduct research in Traffic Safety, and to provide an understanding of vehicle and driver performance on high speed streets and highways, researchers frequently turn to the development of models to describe vehicular traffic flow. In order to adequately develop and validate such models, it is necessary to obtain precise and detailed information on traffic flow characteristics. This task, because of the tremendous costs and difficulties associated with it, has been the single greatest impediment to vehicular traffic flow model development efforts. As a result, traffic flow researchers have, with few exceptions, either omitted model validation entirely, or have used data obtained by crude and inadequate methods in superficial attempts at model validation. This report will describe a system of instrumentation that has been developed to overcome these problems and has been used successfully for the precise measurement of traffic flow characteristics. The system, employing both aerial and ground photographic techniques, was developed at the Institute of Transportation and Traffic Engineering, UCLA, under the direction of this author (Ref. 1, 4, 5, 8, 9, 10), to obtain traffic flow data for a study sponsored by the United States Bureau of Public Roads (Contract CPR 11-4309) concerning the effects of exit ramps on freeway operation and control.

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Walter W. Mosher Jr. "Aerial Photographic Instrumentation System For Collection Of Complete Traffic Flow Characteristics Data For Studies In Traffic Flow And Highway Safety", Proc. SPIE 0030, Photo-Optical Instrumentation: A Tool for Solving Traffic and Highway Engineering Problems, (1 May 1972); https://doi.org/10.1117/12.953565

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KEYWORDS

Cameras

Photography

Data modeling

Sensors

Computer programming

Imaging systems

Control systems

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