Abstract
Many countries try to improve a traffic design on the intersection to make it safer as a traffic safety is more concerned on the traffic system. A near-side traffic signal has been recently introduced to many countries for the traffic safety. However, the efficiency of an intersection seriously goes down according to the location of a near-side signal on existing far-side traffic system, which is caused by wrong visibility of driver and extended distance to cross intersection. Both efficiency and safety should be considered on the improvement of intersections.
On this study a control delay is used as the efficiency of intersections and it is researched what kinds of factors and how much they are influenced by the location of a signal device. Various analyses estimate the changes of traffic conditions on installation of near-die signal on this study.
