An Investigation on General Structure and Working Principle of Corridor Average Speed Enforcement Systems (KOHİTS) from Design to Operation: Toprakkale Case

High number of traffic accidents, caused by excessive vehicle speeds in traffic, motivate officials and researchers in Turkey and all around the World to develop solutions. For this purpose in recent years, new systems, called as Smart Transport Systems (AUS), are being developed in many countries in order to prevent driving at high speeds without taking into account speed limits in urban and rural roads and to reduce the number of speed related accidents. Corridor Average Speed Enforcement Systems (KOHİTS), which is an AUS application, was developed to reduce the number of traffic accidents caused by excessive speeds and increase road safety and enable drivers to move at speed limits in Turkey as well as in the overall World. With this study, it is aimed to inform all relevant stakeholders technically by examining all the important working principles and all important issues to be taken into consideration by using scientific methods until they are activated from the beginning of system configuration. For this purpose, in order to give detailed information about the field measurements and observations made within the scope of the study, the configuration steps of KOHİTS in 2 different road routes in Toprakkale / Osmaniye ring road from the beginning to the end are examined and explained step by step in detail. From the obtained results, the most important points in the configuration process of such systems determined as high resolution quality cameras’ utilization, fast and uninterrupted network infrastructure enabling the transfer of data from the field to the center and comprehensive analysis opportunity of the developed software. It was also observed from the field observations and measurements that the configuration of the system by an expert team, development of a good software and utilization of a good technological infrastructure in the system are other very important parameters for the performance of the system.