Length of Collecting and Distributing Lane of Alfalfa Leaf Interchange Study

There is interweaving activity that takes place on the rung ramps of alfalfa leaf interchanges. The existence of these weaving sections will greatly affect the traffic capacity of the interchange. Therefore, it is necessary to set up collecting and distributing roads to increase traffic capacity and improve driving efficiency. In order to study the length of collecting and distributing lanes, this paper analyzes the factors such as marking, recognition sight distance, and the interleaving length, determining the applicable range of the length of the collector road. Finally, using VISSIM software and taking vehicle delay as the evaluation index, we verify the rationality of the conclusion by comparing vehicle delay under different simulation lengths.