Abstract
Start-up lost time is an important parameter in performance of signalized intersections which may in turn depict the effect of behaviour of different drivers for different countries. In this study the parameters affecting the startup lost time in Turkey will be defined and a model will be established to present the relationship between start-up lost time, saturation flow as well as start response time with the behaviour of Turkish drivers. For this purpose, observations were carried out at eight intersections in Turkey. Analyses have shown that saturation headways decrease with the increase in time in start response since the drivers in the 2nd and higher rows of a queue have a longer time to get prepared to discharge. Results also indicated that start-up lost time increases rapidly as cycle time increases, and lower start-up lost time values can be observed in left or right turning lanes.
Highlights
One of the parameters which may show the effect of behaviour of different drivers for different countries is “start-up lost time”
The analysis showed that Weibull Distribution is the statistical model which can be used to represent start-up lost times at signalized intersection approaches (Anderson-Darling value is 0.628 and P value is 0.102 for Weibull distribution)
This study tries to identify the relationship between queue discharge headways, start response time and start-up lost time
Summary
One of the parameters which may show the effect of behaviour of different drivers for different countries is “start-up lost time”. In Turkey, Çalışkanelli & Tanyel [12] found the mean values for through and left and right turning vehicles as 1.48 s; 1.26 s and 1.39 s, respectively They suggested an empirical function for the prediction of start response time of drivers in the leading position of a queue at a signalized intersection: tr = -0.149MNV - 0.136GN + 0.020CYL (1). Tong and Hung [10] analyzed the headway values obtained from signalized intersections using the method of artificial neural networks and determined that headway was affected by the queuing position, the type of subject or preceding vehicle and reaction times. In this study the parameters affecting the start-up lost time in Turkey will be defined and a model will be established to present the relationship between startup lost time, saturation flow as well as start response time with the behaviour of Turkish drivers. The relationship between start-up lost time, saturation flow and start response time is discussed
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