EVALUATION OF SINGLE-AND TWO-REGIME TRAFFIC FLOW MODELS

TUNNEL DATA AS WELL AS THE ORIGINAL FREEWAY DATA WERE SUBJECTED TO EXTENSIVE ANALYSIS TO DETERMINE THE TRAFFIC FLOW MODEL WHICH MEANT THE PRE-SELECTED CRITERIA ASSUMING A SINGLE SPEED-DENSITY REGIME. BOTH SETS OF DATA WERE SUBJECTED TO SIMILAR ANALYSIS TO DETERMINE THE TRAFFIC FLOW MODEL FOR THE FREE FLOW REGIME AND THE CONGESTED FLOW REGIME WHICH MEANT THE PRE-SELECTED CRITERIA FOR TWO REGIME MODELS. THE MODEL PROPOSED BY GREENSHIELDS, UNDERWOOD, AND DRAKE BEST REPRESENTED THE TWO SETS OF DATA. THE ORIGINAL CAR FOLLOWING MODEL AND THE GREENBERG MODEL BEST REPRESENTED THE TWO CONGESTED FLOW REGIME MODELS. IT IS CONCLUDED THAT THE SELECTED TUNNEL FREE-FLOW REGIME MODEL IS BEST REPRESENTED BY THE GREENSHIELDS MODEL AND THE UNDERWOOD MODEL. THE DETERMINATION OF THE LIMITS FOR THE FREE FLOW AND CONGESTED FLOW REGIMES UNDOUBTEDLY AFFECT THE SELECTION OF TWO REGIME MODELS.

• Supplemental Notes:
  • pp 1-29, 11 FIG, 12 REF
• Corporate Authors:

  University of California, Berkeley

  Institute of Transportation and Traffic Engineering
  Berkeley, CA  United States 
• Authors:
  • May, A D
  • Keller, H E
• Publication Date: 0

Subject/Index Terms

• TRT Terms: Car following; Data analysis; Mathematical analysis; Mathematical models; Traffic congestion; Traffic density; Traffic flow; Traffic simulation; Traffic speed; Tunneling
• Uncontrolled Terms: Models
• Subject Areas: Bridges and other structures; Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00227076
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 13 2004 6:47PM