ANALISIS HUBUNGAN RASIO VOLUME KAPASITAS JALAN DENGAN KECELAKAAN PADA JALAN BRIGJEN KATAMSO YOGYAKARTA

The Population in Yogyakarta city has increased every year. This result caused more people use transportation. With so many transportation user it can pose a risk accident that harm various partie. Therefore, it is very important to conduct a study on traffic in Yogyakarta city with all various characteristics. The purpose of this research is to analyze the potential of accidents, types and characteristics of accidents, analyze the volume ratio of road capacity (V/C ratio) by speed, and analyze V/C ratio accident that found in Brigjen Katamso Street. This Research used quantitative methods by collecting secondary and primary data. The primary data was collected from field surveys in the form of traffic volume and vehicle speed data. The secondary data is accident data of 2019-2020 from Kepolisian Resort Kota Yogyakarta and V/C ratio of 2018-2019 from Dinas Perhubungan Kota Yogyakarta. This research use calculation method refers to the Bina Marga 1997 to analyze the capacity of the roads. The result of analysis show that the most types of potential accidents are dominated by motorcycles with a front side attack with a percentage of 44% in segmen 1 and front side attack with a percentage of 41% in segmen 2. The relations between V/C ratio with speed of vehicle get the result of the linear equation y = -99,965x + 78,026 with value of R2 = 0,92. The relations between V/C ratio with accident get the result of eksponential y = 434,04 e −10,76 xwith R2 = 0,8622. Meanwhile, the relations between V/C ratio with potential accident get the result of exponential y = 434,04 e −10,76 xwith R2 = 0,8622. The final result of the study concluded that a high V/C ratio will caused a decrease accident rate value.