VOL 1 - EXPERIMENTAL PROGRAM TRAFFIC SIMULATION FOR THE DESIGN OF UNIFORM SERVICE ROADS IN MOUNTAINOUS TERRAIN

EXPERIMENTAL TRAFFIC DATA WERE OBTAINED IN SUPPORT OF THE DEVELOPMENT AND VALIDATION OF A SIMULATION MODEL OF TRAFFIC FLOW IN MOUNTAINOUS TERRAIN. THE DATA WERE COLLECTED ON RURAL FOUR LANE DIVIDED HIGHWAYS AT TWO CALIFORNIA LOCATIONS. TIME LAPSE AERIAL PHOTOGRAPHS AND GROUND BASED TRAFFIC COUNTS AND SPEED MEASUREMENTS WERE OBTAINED ON THE "FIVE-MILE GRADE" (INTERSTATE 5) NORTH OF LOS ANGELES. TRAFFIC COUNTS AND SPEED MEASUREMENTS WERE MADE ON THE "CORDELIA" GRADE (INTERSTATE 80) WEST OF SACRAMENTO. DATA WERE OBTAINED FROM THE AERIAL PHOTOGRAPHS ON LANE CHANGING AND VEHICLE SPEEDS IN PASSING. THE TRAFFIC COUNTS WERE USED TO ESTABLISH THE DISTRIBUTION OF VEHICLES TO LANE AS A FUNCTION OF TRAFFIC CONDITIONS AND ROADWAY GRADES. THE SPEED MEASUREMENTS WERE USED TO DEFINE THE DISTRIBUTIONS OF UNIMPEDED VEHICLE SPEEDS AND THE EFFECTS OF PROLONGED GRADES ON THE DISTRIBUTIONS. /AUTHOR/

• Corporate Authors:

  Midwest Research Institute

  425 Volker Boulevard
  Kansas City, MO  United States  64110-2299

  Missouri State Highway Commission

  State Highway Building
  Jefferson City, MO  United States  65101

  Bureau of Public Roads /US

  400 7th Street, SW
  Washington, DC  United States  20590
• Authors:
  • Kobett, D R
  • St John, A D
• Publication Date: 1970-4-1

Subject/Index Terms

• TRT Terms: Aerial photography; Divided highways; Four lane highways; Frontage roads; Lane distribution; Mathematical models; Measurement; Mountains; Simulation; Slopes; Speed; Time lapse photography; Traffic; Traffic counts; Traffic flow
• Uncontrolled Terms: Grades; Models
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00227015
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Report/Paper Numbers: CPR-11-5093
• Files: TRIS, STATEDOT
• Created Date: Sep 28 1970 12:00AM