It is interesting that despite its long-term and widespread use in China,relatively little is known about the operational characteristics of a variable approach lane(VAL)in real world.Using one month of inductive-loop...It is interesting that despite its long-term and widespread use in China,relatively little is known about the operational characteristics of a variable approach lane(VAL)in real world.Using one month of inductive-loop detector data at ten dynamic approaches(intersection approaches with dynamic lane assignment)from different intersections in Hangzhou,China,this paper presents the results of a study materializing the flow characteristics of variable approach lanes by comparing them with adjacent normal-flow lanes under various operating conditions.The effectiveness of the results was examined in a case-control analysis by integrating 12 fixed approaches(without variable lane)as benchmark.It was found that the difference or similarity of flow rate between the variable lane and the normally-flowing lane differs under a variety of traffic volume,time-of-day,modeof-operation,and overhead lane-use guidance sign(OHS)location conditions.The study also revealed that while naturally there may be a difference in the flow rates between referencing lanes at fixed approaches,the flow difference percentage(FDP)at dynamic approaches is significantly higher.展开更多
基金supported by“Pioneer”and“Leading Goose”R&D Program of Zhejiang Province of China(No.2022C01042)the Natural Science Foundation of Zhejiang Province of China(Nos.LGF21E080002 and LR23E080002)+1 种基金the National Natural Science Foundation of China(No.72361137006)the Alibaba-Zhejiang University Joint Research Institute of Frontier Technologies.
文摘It is interesting that despite its long-term and widespread use in China,relatively little is known about the operational characteristics of a variable approach lane(VAL)in real world.Using one month of inductive-loop detector data at ten dynamic approaches(intersection approaches with dynamic lane assignment)from different intersections in Hangzhou,China,this paper presents the results of a study materializing the flow characteristics of variable approach lanes by comparing them with adjacent normal-flow lanes under various operating conditions.The effectiveness of the results was examined in a case-control analysis by integrating 12 fixed approaches(without variable lane)as benchmark.It was found that the difference or similarity of flow rate between the variable lane and the normally-flowing lane differs under a variety of traffic volume,time-of-day,modeof-operation,and overhead lane-use guidance sign(OHS)location conditions.The study also revealed that while naturally there may be a difference in the flow rates between referencing lanes at fixed approaches,the flow difference percentage(FDP)at dynamic approaches is significantly higher.
