Operation simulation of urban expressway long-distance interweaving zones based on cellular automata
A multi-lane cellular automata model was established to study the influence of long-distance interweaving zones on traffic flow in urban expressways.Considering the lane-changing behavior and the intensity of lane-changing needs of vehicles at different positions within the long-distance weaving section,three distinct lane-changing rules were introduced and the long-distance weaving area was segmented accordingly.Cellular models under different traffic management strategies were constructed,considering factors such as dynamic safety distances and traffic flow management.Simulation revealed that mandatory lane-changing behavior within long-distance weaving sections easily led to localized congestion,forming bottlenecks at entrances and exits.Although the double dashed-line strategy provided more opportunities for lane-changing vehicles to exit,this advantage gradually diminished with an increasing occupancy rate.In comparison,the dashed-solid line strategy appeared more reasonable.The dashed-solid line strategy with a main road priority,while maintaining the right of way for vehicles exiting from the main road,inevitably sacrificed some efficiency in the movement of vehicles on the secondary road.However,considering the intermittent traffic flow characteristics of the secondary road,the solid-dashed line strategy 1 (the main road exits first,then followed by the secondary road) still held certain practical value.
万方数据
