Investigation of traffic flow characteristics :|case study of D100 highway

Abstract

Bridges located on the Bosphorus create some of the most problematic locations in Istanbul traffic network where congestion is a big problem. In this thesis, using the video footages provided by the Department of Traffic in Istanbul Metropolitan Municipality the traffic characteristics on a short segment of road located on the D100 Highway upstream of the 15 July Martyrs Bridge and just upstream of the Metrobus on-ramp and Yildiz on-ramp is investigated. The video footages are from 10.10.2018 to 16.10.2018 and a total of approximately 12 hours of data is contained in the final data. The road is divided into regions, and the speed and flow values inside these regions are calculated after the image processing stage. It is found that speed and flow rate on the left lane is generally the highest while speed and flow rate on the right lane is generally the lowest in uncongested traffic conditions while they balance each other when traffic congestion is introduced. Regression models are created regarding the traffic parameters inside these regions using IBM SPSS. With these regression models, it is found that left lane and middle lane have similar flow and speed characteristics and it is also found that speed on a lane is positively correlated with speed on other lanes.