Study on the Methods of Establishing Waiting Areas for Auto-vehicles Turning Left and Going Straight at Signalized Intersections

To increase the capacity of a road intersection and the traffic capacity,and reduce the traffic delays at the intersection,the settlement of the waiting-areas for auto-vehicles is very important.The methods of organizing traffic flows in a signalized intersection with waiting-areas,channelized design and signal control are analyzed in this research.The effect of the establishment of the waiting-areas for auto-vehicles turning left or going straight on the traffic capacity has been discussed in consideration of channelized design and signal control.Finally,with the utilization of the VISSM software,the increase of the intersection capacity and the decrease of the average delay at the entrance of a intersection have been studied by the simulation of the traffic condition at the Guanyuanqiao intersection.It turns out that the establishment of the waiting-areas for auto-vehicles is able to improve the traffic capacity at this intersection by 17.4% and decrease the average traffic delay by 26.1%.