To improve the capacity of signalised intersections for left‐turn vehicles, an unconventional left‐turn design named the contraflow left‐turn lane is applied at intersections in several cities of China. The main concept of the design is to provide more capacity for left‐turn vehicles by dynamically making use of the adjacent opposite lanes. In this study, a cellular automaton model that simulates left‐turn traffic flow at a signalised intersection with a contraflow left‐turn lane was developed and verified by field data. Rules for vehicles entering the contraflow left‐turn lane were proposed, and various factors including the vehicle type, driver type, and the ratio of U‐turn vehicles were considered. The simulation results showed that the contraflow left‐turn lane could increase the capacity of the intersection and decrease the delay of left‐turn vehicles. Also, the optimal match between the length of the contraflow left‐turn lane and the duration of the pre‐signal green light can be evaluated via simulation. This study can provide a reference for the actual application of contraflow left‐turn lanes.
Cellular automaton simulation of vehicles in the contraflow left‐turn lane at signalised intersections
IET Intelligent Transport Systems ; 13 , 7 ; 1164-1172
2019-07-01
9 pages
Article (Journal)
Electronic Resource
English
field data , signalised intersection , cellular automaton simulation , left‐turn vehicles , U‐turn vehicle ratio , driver type , road traffic , formal verification , China , traffic engineering computing , vehicle type , computer simulation , left‐turn traffic flow simulation , contraflow left‐turn lane , cellular automata
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