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Issues and concerns of microscopic calibration process at different network levels : case study of Pacific Motorway

Rahman, Mamun, Bevrani, Kaveh, & Chung, Edward (2011) Issues and concerns of microscopic calibration process at different network levels : case study of Pacific Motorway. In Australasian Transport Research Forum 2011, 28 - 30 September 2011, Adelaide Hilton Hotel, Adelaid, SA.

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Abstract

Calibration process in micro-simulation is an extremely complicated phenomenon. The difficulties are more prevalent if the process encompasses fitting aggregate and disaggregate parameters e.g. travel time and headway. The current practice in calibration is more at aggregate level, for example travel time comparison. Such practices are popular to assess network performance. Though these applications are significant there is another stream of micro-simulated calibration, at disaggregate level. This study will focus on such microcalibration exercise-key to better comprehend motorway traffic risk level, management of variable speed limit (VSL) and ramp metering (RM) techniques. Selected section of Pacific Motorway in Brisbane will be used as a case study. The discussion will primarily incorporate the critical issues encountered during parameter adjustment exercise (e.g. vehicular, driving behaviour) with reference to key traffic performance indicators like speed, lane distribution and headway; at specific motorway points. The endeavour is to highlight the utility and implications of such disaggregate level simulation for improved traffic prediction studies. The aspects of calibrating for points in comparison to that for whole of the network will also be briefly addressed to examine the critical issues such as the suitability of local calibration at global scale. The paper will be of interest to transport professionals in Australia/New Zealand where micro-simulation in particular at point level, is still comparatively a less explored territory in motorway management.

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ID Code: 46285
Item Type: Conference Paper
Additional URLs:
Keywords: Motorways, Microscopic simulation, calibration
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Transport Engineering (090507)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Urban Development
Current > Research Centres > Smart Transport Research Centre
Copyright Owner: Copyright 2011 [please consult the authors]
Deposited On: 03 Oct 2011 23:00
Last Modified: 05 Oct 2011 20:42

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