Determination of the capacity of the two-lane acceleration lanes with a central island

Interconnection sections of exit ramps at different levels with motorways are one of the main sources of traffic hindrance, so special attention should be paid to ensuring the capacity of such areas. Dual-lane motorway connections are often made using two-lane acceleration lanes, with safety islands as a method of increasing their capacity. In order to develop recommendations for determining the capacity of such acceleration lanes, the author carried out experimental studies of the patterns of DLC maneuvers within the highways on the sections bordering the entrances. The studies were carried out by recording the trajectories of vehicles that perform a maneuver of exit from the entrance to the highway. On the basis of the carried out researches an improvement of a method of calculation of capacity of two-lane acceleration lanes is offered. The results of the studies are recommended for use in the design of highways and intersections at different levels of them, as well as for the reconstruction of the highway lanes in order to increase their capacity.