交差点での交通インパクトを改善するためのリアルタイム画像処理技術

This research presents the result of a pilot study using the author’s innovative real-time imageprocessing technology to reduce intersection traffic impacts including road crashes, air pollution andexcessive fuel consumption which arose as a result of long intersection delays. Implementation of thenew technology has resulted in substantial reductions in the number of traffic crashes, traffic pollutionand vehicle fuel consumption at these intersections.The overall objective of this study is to develop a new and innovative ITS technology for addressingtraffic impacts at signalized intersections caused by long delays; these impacts include intersectiontraffic crashes, traffic pollutions and wasteful fuel consumption. Specific objectives are to study theoptimization of cycle times under traffic synchronization, queue length, initial speed and final speedduring lane changing lane associated with the existing traffic signal control at the two adjacentintersections, to study drivers’ behaviour at intersection, such as red light running, speed anddangerous lane changing with the objective of reducing the number of crashes, to develop an ITStechnology including video image sensing device and new software for capturing vehicles passing anintersection and capable of counting 5 vehicle types for use in the calculation of PCU from newmodel,the technology also include the concept of trigger of virtual loop detector which can help toreduce the cycle times and improve the associated traffic control by traffic synchronization togetherwith another software. As a result, the intersection traffic impact such as speeding and lane changingbehaviour are mitigated, to study the effects of the implemented ITS technology on traffic impacts atthe case study intersections including the reduction in number of traffic crashes, reduced level oftraffic pollution and reduced fuel consumption and to study and produce a new hardware (InterfaceCard) for use with a traffic controller which can link the developed software with any trafficcontrollers in Thailand.This research is useful for Thai drivers as they can benefit from reduced travel times and feweraccidents after the complete installation of the ITS Technology. In addition, the researcher hasdeveloped a new set of equations for use by Thai traffic engineers in the study of environmentalimpact from traffic congestion at intersections based on the Stop and Go conditions. In case of fuelconsumption, the amount of fuel consumption between before and after situation decreasesubstantially. Recommendations for future study focus on the use of high quality CCTVs formonitoring of drivers’ use of mobile phones while driving using the Image Sensing Software, and theuse of laser projected on water sprayed screen while crossing the roadway.