Abstract
Travel time is one of the most appropriate traffic measures that can be provided to road users for easy understanding and decision making. This paper presents a simple method to predict travel time on urban arterial roads. Travel time prediction methods include historical methods, model based methods, and data driven approaches. Of these, data driven approaches capture the uncertainty and non-linearity of traffic time series better and hence could be used for travel time prediction under Indian traffic conditions effectively. Among data driven approaches, support vector regression (SVR) models predict travel times with reasonable accuracy, especially when the amount of data is less or the variability in the data is high. However, studies on the use of SVR for travel time prediction under Indian traffic conditions are limited. In this paper, SVR technique was used to predict the travel time using data collected from Bluetooth sensors placed at specific locations on an urban arterial corridor in Chennai, India. The optimum number of inputs, appropriate kernel function, cost parameter and width of tolerance for the SVR model were determined. The results obtained show that the SVR performed better than an Artificial Neural Network model and moving average approach.
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Acknowledgements
The authors acknowledge the opportunity provided by the 4th Conference of the Transportation Research Group of India (4th CTRG) held at IIT Bombay, Mumbai, India between 17th December, 2017 and 20th December, 2017 to present the work that forms the basis of this manuscript. The authors also acknowledge the support for this study as a part of the project RB/16-17/CIE/001/TATC/LELI under the Development of a Dynamic Traffic Congestion Prediction System for Indian Cities, funded by Tata Consultancy Services.
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Philip, A.M., Ramadurai, G. & Vanajakshi, L. Urban Arterial Travel Time Prediction Using Support Vector Regression. Transp. in Dev. Econ. 4, 7 (2018). https://doi.org/10.1007/s40890-018-0060-6
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DOI: https://doi.org/10.1007/s40890-018-0060-6