Host: Eastern Asia Society for Transportation Studies
Pages 341
The improper design of traffic signal can be a cause of accident such as driver can not pass a large intersection because of insufficient of Intergreen time. Intergreen time is duration time of the clearance part of the phase corresponding to the period between the phase change point and the beginning of the green display for the next phase. In Thailand, design guideline suggests that Intergreen time is the minimal time that the accident will not be occurred and the least time is 4 seconds. However, the comparison study with international design guidelines from Germany, Hungary and China; their guidelines consist of description and formula to determine the Intergreen time clearly. The Intergreen time depends on multi factors such as distance, design vehicle and speed. This paper describes the comparison the intergreen time among four countries.
