Online Traffic Speed Estimation for Urban Road Networks with Few Data: A Transfer Learning Approach

2019 ◽  
Author(s):  
James J.Q. Yu
Keyword(s):  
Transfer Learning ◽  
Road Networks ◽  
Learning Approach ◽  
Speed Estimation ◽  
Urban Road ◽  
Traffic Speed ◽  
Online Traffic ◽  
Few Data ◽  
Traffic Speed Estimation

scholarly journals Accurate Real-Time Traffic Speed Estimation Using Infrastructure-Free Vehicular Networks

2015 ◽  
Vol 2015 ◽  
pp. 1-19 ◽  
Author(s):  
Zongjian He ◽  
Buyang Cao ◽  
Yan Liu
Keyword(s):  
Real Time ◽  
Large Scale ◽  
Vehicular Networks ◽  
Route Planning ◽  
Speed Estimation ◽  
Traffic Condition ◽  
Real Time Traffic ◽  
Traffic Trace ◽  
Traffic Speed ◽  
Traffic Speed Estimation

Real-time traffic speed is indispensable for many ITS applications, such as traffic-aware route planning and eco-driving advisory system. Existing traffic speed estimation solutions assume vehicles travel along roads using constant speed. However, this assumption does not hold due to traffic dynamicity and can potentially lead to inaccurate estimation in real world. In this paper, we propose a novel in-network traffic speed estimation approach using infrastructure-free vehicular networks. The proposed solution utilizes macroscopic traffic flow model to estimate the traffic condition. The selected model only relies on vehicle density, which is less likely to be affected by the traffic dynamicity. In addition, we also demonstrate an application of the proposed solution in real-time route planning applications. Extensive evaluations using both traffic trace based large scale simulation and testbed based implementation have been performed. The results show that our solution outperforms some existing ones in terms of accuracy and efficiency in traffic-aware route planning applications.

Urban network-wide traffic speed estimation with massive ride-sourcing GPS traces

2020 ◽  
Vol 112 ◽  
pp. 136-152 ◽  
Author(s):  
Jingru Yu ◽  
Marc E.J. Stettler ◽  
Panagiotis Angeloudis ◽  
Simon Hu ◽  
Xiqun (Michael) Chen
Keyword(s):  
Speed Estimation ◽  
Urban Network ◽  
Gps Traces ◽  
Traffic Speed ◽  
Traffic Speed Estimation
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