PEDESTRIAN IMPEDANCE OF TURNING-MOVEMENT SATURATION FLOW RATES: COMPARISON OF SIMULATION, ANALYTICAL, AND FIELD OBSERVATIONS

TRAF-NETSIM and its successor CORSIM are comprehensive microsimulation environments that have been widely used to model the urban traffic environment in the United States and abroad. CORSIM is employed in this study to simulate and evaluate the effects of pedestrian flows on right-turn saturation flow rates at signalized intersections. The saturation flow rates returned by CORSIM were compared with field data collected throughout the United States and with three existing analytical models in the United States, Australia, and Canada. These comparisons indicated the CORSIM models pedestrian interference with the turning vehicles more severely than the three analytical methods, but with a smaller effect than the empirical data indicates. Further, the empirical data exhibit a logarithmic relationship between saturation flow rate and opposing pedestrian volume, compared with the linear relationship used in the simulation and analytical models. Implications for the design and analysis of signalized intersections are presented.

• Record URL:
  • https://doi.org/10.3141/1578-08
• Summary URL:
  • http://scholar.google.com/scholar_lookup?title=PEDESTRIAN+IMPEDANCE+OF+TURNING-MOVEMENT+SATURATION+FLOW+RATES%3a+COMPARISON+OF+SIMULATION%2c+ANALYTICAL%2c+AND+FIELD+OBSERVATIONS&author=N.+Rouphail&author=B.+Eads&publication_year=1997
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309061687
• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1578, Pedestrian and Bicycle Research 1997.
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Rouphail, N M
  • Eads, B S
• Publication Date: 1997

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 56-63
• Serial:
  • Transportation Research Record
  • Issue Number: 1578
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Alternatives analysis; Field studies; Flow; Mathematical models; Microsimulation; Pedestrian flow; Percent saturation; Right turns; Signalized intersections; Simulation; Traffic congestion; Traffic simulation
• Uncontrolled Terms: Analytical models; Field data; Flow rate
• Old TRIS Terms: Traffic interference
• Subject Areas: Highways; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00743141
• Record Type: Publication
• ISBN: 0309061687
• Files: TRIS, TRB, ATRI
• Created Date: Nov 19 1997 12:00AM