Highway capacity through vissim calibrated for mixed traffic conditions

The present study demonstrates applicability of VISSIM software to determine capacity of multilane highways under mixed traffic flow conditions. Traffic flow data collected on a section of four-lane divided highway are used to develop the speed-flow curve. The same set of field data is used in VISSIM and simulated speed-flow curve is compared with field curve. It was found that VISSIM in its original form overestimates both speed and capacity of the highway. Driver behaviour parameters CC0 and CC1 are first determined for homogeneous traffic conditions having only one of the four types of vehicles in the stream and then results are aggregated to get the values of these parameters for a mixed traffic stream. Further analysis of field data with calibrated values of CC0 and CC1 indicated a good match between field and simulated capacity. The procedure is shown to work on another section of four-lane divided highway with paved shoulders, where simulated capacity was 5329 pcu/hr against the field capacity of 5277 pcu/hr.

[1]  Satish Chandra,et al.  Simulation of mixed traffic flow on four-lane divided highways , 2011 .

[2]  Randy B Machemehl,et al.  Sensitivity of Simulated Capacity to Modification of VISSIM Driver Behavior Parameters , 2006 .

[3]  Madhav Chitturi,et al.  Calibration of VISSIM for Freeways , 2008 .

[4]  Shriniwas S Arkatkar,et al.  Derivation of Capacity Standards for Intercity Roads Carrying Heterogeneous Traffic using Computer Simulation , 2011 .

[5]  Ning Zhang,et al.  THE MARGINAL DECREASE OF LANE CAPACITY WITH THE NUMBER OF LANES ON HIGHWAY , 2005 .

[6]  L. B. Zala,et al.  Comparing the methods of passengar car unit estimation , 1997 .

[7]  David Stanek,et al.  CORSIM, PARAMICS, and VISSIM: What the Manuals Never Told You , 2004 .

[8]  Carlos Sun,et al.  Microsimulation Calibration Using Speed-Flow Relationships , 2008 .

[9]  Peter Vortisch,et al.  VALIDATION OF THE MICROSCOPIC TRAFFIC FLOW MODEL VISSIM IN DIFFERENT REAL-WORLD SITUATIONS , 2001 .

[10]  Partha Pratim Dey,et al.  Simulation of Mixed Traffic Flow on Two-Lane Roads , 2008 .

[11]  B D Greenshields,et al.  A study of traffic capacity , 1935 .

[12]  Roberto Horowitz,et al.  Congested Freeway Microsimulation Model Using VISSIM , 2004 .

[13]  Jaeyoung Kwak,et al.  Calibration and validation of TRANSIMS microsimulator for an urban arterial network , 2011 .

[14]  Frank Montgomery,et al.  The investigation of an alternative interpretation of the speed-flow relationship for UK motorways , 1993 .

[15]  Tom V. Mathew,et al.  Calibration of Microsimulation Models for Nonlane-Based Heterogeneous Traffic at Signalized Intersections , 2010 .

[16]  Satish Chandra,et al.  EFFECT OF LANE WIDTH ON CAPACITY UNDER MIXED TRAFFIC CONDITIONS IN INDIA , 2003 .