A METHOD FOR PREDICTING SPEEDS THROUGH SIGNALIZED STREET SECTIONS

A METHOD OF RELATING TRAFFIC SPEED TO VOLUME WAS DEVELOPED BASED ON THE IDEA THAT SPEED ON URBAN ROUTE SECTIONS WAS CONTROLLED LARGELY BY THE ABILITY TO MOVE THROUGH SIGNALIZED INTERSECTIONS. A FURTHER HYPOTHESIS WAS THAT IF TRAFFIC WERE RANDOM ON URBAN ROUTE SECTIONS, AND THUS DESCRIBED BY A POISSON TYPE DISTRIBUTION, THEN THE ARRIVALS IN ANY GIVEN TIME INTERVAL COULD BE DETERMINED BY ANY GIVEN HOURLY RATE OF FLOW. THE RESULTS OF THE RESEARCH WORK FOLLOWING THE HYPOTHESIS DESCRIBED ARE PRESENTED. IT IS SHOWN HOW THE RANDOMNESS OF TRAFFIC WAS TESTED, AND THE ESTIMATIONS OF AVERAGE SPEED ARE DESCRIBED.

• Supplemental Notes:
  • 28 pp 12 FiG, 3 TAB
• Corporate Authors:

  Chicago Area Transportation Study

  300 West Adams Street
  Chicago, IL  United States  60606
• Authors:
  • Campbell, E W
  • Keefer, L E
  • Adams, R W
• Publication Date: 1959-1-5

Subject/Index Terms

• TRT Terms: Average spot speed; Estimates; Forecasting; Hypothesis testing; Intersections; Methodology; Poisson ratio; Signalization; Traffic flow; Traffic speed; Traffic volume; Travel patterns; Urban highways
• Uncontrolled Terms: Hypothesis; Traffic patterns
• Old TRIS Terms: Poissons ratio; Random inputs
• Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00225102
• Record Type: Publication
• Source Agency: Urban Transp Plng Abstracts /Prelim
• Files: TRIS
• Created Date: Jul 24 1994 12:00AM