Real time information provision benefit measured by macroscopic fundamental diagram
Tsubota, Takahiro, Bhaskar, Ashish, Chung, Edward, & Geroliminis, Nikolaos (2013) Real time information provision benefit measured by macroscopic fundamental diagram. In World Conference on Transport Research (WCTR 2013), 15-18 July 2013, Rio de Janeiro, Brazil.
The existence of Macroscopic Fundamental Diagram (MFD), which relates space-mean density and flow, has been shown in urban networks under homogeneous traffic conditions. Since MFD represents the area-wide network traffic performances, studies on perimeter control strategies and an area traffic state estimation utilizing the MFD concept has been reported.
One of the key requirements for well-defined MFD is the homogeneity of the area-wide traffic condition with links of similar properties, which is not universally expected in real world. For the practical application of the MFD concept, several researchers have identified the influencing factors for network homogeneity. However, they did not explicitly take the impact of drivers’ behaviour and information provision into account, which has a significant impact on simulation outputs.
This research aims to demonstrate the effect of dynamic information provision on network performance by employing the MFD as a measurement. A microscopic simulation, AIMSUN, is chosen as an experiment platform. By changing the ratio of en-route informed drivers and pre-trip informed drivers different scenarios are simulated in order to investigate how drivers’ adaptation to the traffic congestion influences the network performance with respect to the MFD shape as well as other indicators, such as total travel time. This study confirmed the impact of information provision on the MFD shape, and addressed the usefulness of the MFD for measuring the dynamic information provision benefit.
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|Item Type:||Conference Paper|
|Keywords:||Macroscopic Fundamental Diagram, pre-trip information, en-route information, microscopic simulation, route choice|
|Divisions:||Current > QUT Faculties and Divisions > Science & Engineering Faculty
Current > Research Centres > Smart Transport Research Centre
|Copyright Owner:||Copyright 2013 [please consult the author]|
|Deposited On:||16 Sep 2013 22:28|
|Last Modified:||11 Jun 2014 16:08|
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