Abstract: To balance directional distribution of traffic flow and ensure the smooth transition of control scenario, an optimization model of time-space resource allocation at an intersection with reversible approach lanes and a coordinated control method for a reversible approach lane and corresponding signal group are proposed. To validate the effectiveness of the optimization model and control method, a case study is carried out to analyze the control scenarios with reversible approach lanes and with fixed approach lanes. The software MATLAB, traffic simulation software VISSIM and the signal control logic tool VisVAP are used in this study. Results show that, comparing to the control scenario with fixed approach lane, the average delay can be reduced by 3% ~ 50% and 7% ~ 15% for the approach with reversible lane and the entire intersection, respectively. The achievements indicate that the proposed optimization model can satisfy the tidal traffic demands at intersections and the control method can guarantee the safe and steady traffic flow operation.

Key words: engineering of communications and transportation system, isolated intersections, reversible approach lanes, optimization models, coordinated control