Record Display for the EPA National Library Catalog


Main Title Vehicle Operations Survey. Volume I.
Author Harkin, John ; Smit, Malcolm ; Mano, Michael J. ;
CORP Author Scott Research Labs., Inc., San Bernardino, Calif.
Year Published 1971
Report Number SRL-2922-13-1271; APRAC-CAPE-10-68; 10-68-9;
Stock Number PB-210 640
Additional Subjects ( Traffic surveys ; Urban areas) ; ( Vehicular traffic ; Pattern recognition) ; Data acquisition ; Acceleration ; Deceleration ; Recording instruments ; Methodology ; Digital systems ; Statistical analysis ; Analog systems ; Houston(Texas) ; Los Angeles(California) ; Cincinnati(Ohio) ; New York(New York) ; Chicago(Illinois) ; Detroit(Michigan) ; Cruising speed ; Idling
Library Call Number Additional Info Location Last
NTIS  PB-210 640 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 153p
The purpose of the program was to define, determine, and typify automobile driving patterns in terms of operating modes. Data were collected in five major metropolitan areas and subsequently combined to form an overall composite of urban driving patterns. Three surveyor vehicles were instrumented with digital data acquisition systems for use in the field. The 'chase-car' concept was utilized, whereby the instrumented vehicles were operated to emulate the driving patterns of various cars representing the traffic population. Operating parameters of vehicle speed, time, and manifold vacuum, together with various route descriptors, were obtained from the chase vehicle and recorded on magnetic tape for computer batch processing. The data were processed to identify and summarize the basic vehicle operating modes: acceleration, deceleration, cruise, and idle. Mode characteristics such as frequency of occurrence, total duration, average duration, and transition probability were defined in matrix form.