Abstract
Smart cities can effectively improve urban life quality. But, with the rise in population size, there is an increase in the use of vehicles for transportation. In smart city development, traffic control and route planning are the primary tasks to address the problem of travel time estimation. It has become complex due to concerns of wrapped spatio-temporal data on dynamic real-time traffic conditions. The existing methods failed to estimate travel time efficiently due to not considering the spatio-temporal features and lack of computing resources. There is a need for a system like intelligent transportation system to monitor and accurately predict traffic flow to avoid traffic congestion and reduce the impact on the ecological system. This paper developed a novel hybrid deep learning model to estimate optimized travel time and possible trajectories. In this work, U-Net used to reduce the number of feature points for each temporal data and GNN is used to build the graph with connectivity between vehicular nodes. This hybrid model helps us predict traffic flow and aims to estimate accurate travel time from one location (node) to another. The model’s performance is evaluated on the standard benchmark datasets Q-Traffic, TaxiBJ, and Chengdu. The experimental results show that the proposed framework significantly improves performance in extracting travel patterns and provides an optimal route with an estimated travel time than existing methods with RMSE 4%, MAE 20.49%, and MAPE 18%. The proposed model has accurately predicted the estimation of travel time of the vehicle for the given urban traffic data.








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The datasets analyzed during the current study are available from the corresponding author on reasonable request.
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https://github.com/TolicWang/DeepST/blob/master/data/TaxiBJ/README.md
https://ieee-dataport.org/documents/travel-time-data-chengdu-road network
Acknowledgements
I am thankful to the Director of National Institute of Technology—Tiruchirappalli for granting the permission to use the GPU resources from Center of Excellence—Artificial Intelligence (CoE-AI) lab.
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Vankdoth, S.R., Arock, M. Deep intelligent transportation system for travel time estimation on spatio-temporal data. Neural Comput & Applic 35, 19117–19129 (2023). https://doi.org/10.1007/s00521-023-08726-3
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DOI: https://doi.org/10.1007/s00521-023-08726-3