An algorithm for freeway traffic state detection considering speed difference characteristic

2016 ◽  
Author(s):  
Min Zhao ◽  
Xi Chen ◽  
Dihua Sun ◽  
Tong Zhou
Keyword(s):  
Freeway Traffic ◽  
Speed Difference ◽  
Traffic State ◽  
State Detection

Using Traffic Disturbance Metrics to Estimate and Predict Freeway Traffic Breakdown and Safety Events

2021 ◽  
pp. 036119812110124
Author(s):  
Leila Azizi ◽  
Mohammed Hadi
Keyword(s):  
Traffic Safety ◽  
Management Strategies ◽  
Connected Vehicles ◽  
Freeway Traffic ◽  
Transportation Management ◽  
Time To Collision ◽  
Decision Tools ◽  
Traffic State ◽  
Traffic Performance ◽  
Traffic Disturbance

The introduction of connected vehicles, connected and automated vehicles, and advanced infrastructure sensors will allow the collection of microscopic metrics that can be used for better estimation and prediction of traffic performance. This study examines the use of disturbance metrics in combination with the macroscopic metrics usually used for the estimation of traffic safety and mobility. The disturbance metrics used are the number of oscillations and a measure of disturbance durations in the time exposed time to collision. The study investigates using the disturbance metrics in data clustering for better off-line categorization of traffic states. In addition, the study uses machine-learning based classifiers for the recognition and prediction of the traffic state and safety in real-time operations. The study also demonstrates that the disturbance metrics investigated are significantly related to crashes. Thus, this study recommends the use of these metrics as part of decision tools that support the activation of transportation management strategies to reduce the probability of traffic breakdown, ease traffic disturbances, and reduce the probability of crashes.

Traffic state detection with floating car data in road networks

2005 ◽  
Author(s):  
B.S. Kerner ◽  
C. Demir ◽  
R.G. Herrtwich ◽  
S.L. Klenov ◽  
H. Rehborn ◽  
...  
Keyword(s):  
Road Networks ◽  
Traffic State ◽  
Floating Car Data ◽  
State Detection

scholarly journals An adaptive freeway traffic state estimator

Automatica ◽  
2009 ◽  
Vol 45 (1) ◽  
pp. 10-24 ◽  
Author(s):  
Yibing Wang ◽  
Markos Papageorgiou ◽  
Albert Messmer ◽  
Pierluigi Coppola ◽  
Athina Tzimitsi ◽  
...  
Keyword(s):  
State Estimator ◽  
Freeway Traffic ◽  
Traffic State
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