Development of Planning-Stage Models for Analyzing Continuous Flow Intersections

Despite the increasing use of continuous-flow intersections (CFIs) to contend with the congestion caused by heavy through and left-turn traffic flows, a reliable and convenient tool for the traffic community to identify potential deficiencies of a CFI’s design is not yet available. This is due to the unique geometric feature of CFI, which comprises one primary intersection and several crossover intersections. The interdependent relationship between traffic delays and queues at a CFI with five closely spaced intersections cannot be fully captured with the existing analysis models, which were developed primarily for conventional intersections. In response to such a need, this study presents a comprehensive analysis for the overall CFI delay, identifies the potential queue spillback locations, and develops a set of planning-stage models for the CFI design geometry. To facilitate the application of these proposed models, this paper also includes a case study of a CFI at the intersection of MD 4 and MD 235 constructed by the Maryland State Highway Administration.

• Record URL:
  • https://doi.org/10.1061/(ASCE)TE.1943-5436.0000596
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/8674831
• Supplemental Notes:
  • Copyright © 2013 American Society of Civil Engineers
• Authors:
  • Yang, Xianfeng
  • Chang, Gang-Len
  • Rahwanji, Saed
  • Lu, Yang
• Publication Date: 2013-11

Language

• English

Media Info

• Media Type: Digital/other
• Features: References;
• Pagination: pp 1124-1132
• Serial:
  • Journal of Transportation Engineering
  • Volume: 139
  • Issue Number: 11
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-947X
  • Serial URL: https://ascelibrary.org/journal/jtepbs

Subject/Index Terms

• TRT Terms: Left turns; Queuing; Traffic congestion; Traffic delays; Traffic flow; Transportation planning
• Uncontrolled Terms: Continuous flow intersections
• Geographic Terms: Maryland
• Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 01496391
• Record Type: Publication
• Files: TRIS, ASCE
• Created Date: Oct 24 2013 3:38PM