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Toll Estimation as a Function of Time-Dependent Link Cost, Vehicle Category and Distance–A Case Study for Karachi

Mir S. Ali 1, Muhammad Adnan 1, andSyed F. A. Baqueri 2
1. NED University of Engineering and Technology, Karachi, Pakistan
2. Transportation Research Institute (IMOB), Hasselt University, Diepenbeek, Belgium

Abstract—Currently, Time-based speed data are collected through the fixed detectors or loop based detectors fixed at road. These conventional methods were applicable scarcely on arterials or some major inter-city roads as their shifting is an arduous job every now and then. Simultaneously the livelier up rise of the Intelligent Transportation System (ITS) and its integration with the state-of-the-art GPS technology in the transportation sector has given a fresh dimension to it. It stretches the data collection from rather a point to the whole route and hence an opening to an in-depth examination of speed, travel time, delay, identification of bottlenecks and other essential traffic attributes connected to colossal progression of cost estimation. This paper utilizes the tracker data logged on a server specifically designated to record time based position and speed of vehicle. The success of this advanced approach lies in the association of log route modification with respect to the GPS coordinates. The delay functions are used to calculate the extra cost on road users due to superfluous load of vehicles. It explains the variations in this cost with time. This paper also demonstrates a function to internalize this cost on commuters through a toll stimulus. The results identify time based link cost and further provide way to optimize the travel cost through internalization of external cost on the whole network. As a coda this method provides an effective use of GPS within the transportation ensuing in the more apt functioning of the transportation system and eventually abating the monetary losses. It sets basis for toll estimation as a function of additional cost put by the road user. It will also assist in-car-navigation system, once available.

Index Terms—time-dependent link cost, congestion pricing

Cite: Mir S. Ali, Muhammad Adnan, and Syed F. A. Baqueri, "Toll Estimation as a Function of Time-Dependent Link Cost, Vehicle Category and Distance–A Case Study for Karachi," Journal of Traffic and Logistics Engineering, Vol. 4, No. 2, pp. 154-159, December 2016. doi: 10.18178/jtle.4.2.154-159
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