STORAGE REQUIREMENTS FOR SIGNALIZED INTERSECTION APPROACHES

Abstract

The authors developed a stochastic simulation model to generate probability distributions for queue lengths that are used to determine storage requirements for approach lanes at signalized intersections. Realistically expressed in vehicle units, the values are a function of cycle length, lane volume, and effective green time. The queuing distances are appropriate for any movement for which no opposing vehicles are involved. Simulation is described and the results are presented. An example is provided to illustrate the application of design charts to intersectional approaches. The authors note that in intersection design, trade-offs among lengths of turning lane, green times, and cycle lengths forge the necessary balance between geometric and control requirements.