INVESTIGATION OF CAPACITY AND FLOW-SPEED RELATIONSHIP FOR FREEWAY MODEL

THIS STUDY INVESTIGATED POSSIBLE MODIFICATIONS OF REFINING THE FREEWAY MODEL, FREEQ, FROM THE VIEWPOINT OF CAPACITY AND SPEED-FLOW RELATIONSHIPS. THE INTERNAL STRUCTURES OF CAPACITY ANALYSIS AND SPEED FUNCTION IN THE EXISTING FREEQ MODEL WERE ANALYZED AND WERE COMPARED WITH THE PROCEDURES PRESENTED IN THE HIGHWAY CAPACITY MANUAL. SOME MINOR DISCREPANCIES WHICH NEED TO BE REFINED WERE IDENTIFIED. POSSIBLE MODIFICATIONS IN THE FUNDAMENTAL NATURE OF THE MODEL WERE ALSO INVESTIGATED. SOME PRELIMINARY SUGGESTIONS FOR MODIFYING THE ANALYSIS OF MERGING AND WEAVING WERE PRESENTED. FURTHER STUDY OF THE MICROSCOPIC TRAFFIC FLOW MODELS TO DEVELOP BETTER SPEED-FLOW RELATIONSHIP WAS RECOMMENDED.

• Corporate Authors:

  University of California, Berkeley

  Institute of Transportation and Traffic Engineering
  Berkeley, CA  United States 
• Authors:
  • Yeh, S
  • May, A D
• Publication Date: 1972-6

Media Info

• Pagination: 56 p.

Subject/Index Terms

• TRT Terms: Freeway operations; Freeways; Highway capacity; Mathematical models; Traffic flow
• Uncontrolled Terms: Capacity; Model tests; Models
• Old TRIS Terms: Freeway capacity
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00225064
• Record Type: Publication
• Source Agency: California Department of Transportation
• Report/Paper Numbers: Interim
• Files: TRIS, STATEDOT
• Created Date: Apr 20 1974 12:00AM