Simulation-based benefit evaluation of dynamic lane grouping strategies at isolated intersections

Unlike conventional traffic signal control strategies, which assume that an intersection's geometric configuration is given as an exogenous input, dynamic lane grouping (DLG) strategies aim to further improve roadway capacity utilization under significant traffic demand variation. This is accomplished by dynamically adjusting the turning movement assignments for each lane. Previous numerical analyses have demonstrated that such a DLG strategy is effective in balancing lane flow ratios and reducing intersection delays. This paper presents an evaluation of a DLG strategy's benefits at an isolated intersection using microscopic traffic simulation. It is demonstrated that such a DLG strategy can provide significant mobility and sustainability benefits over conventional strategies.