Abstract
Comparison of capacity models of different theoretical settings on the example of a small city roundabout in the City of Mostar
Highlights
There are many roundabout capacity models in the world, which are classified into three key groups, empirical models, theoretical models derived from gap acceptance theory and microscopic simulation models based on modeling of driver behavior, kinematics and vehicle interactions [3]
It resulted in smallest deviations in relation to the directly measured capacity, so this model proved to be applicable in the analyzed local conditions
Considering the large number of existing roundabout capacity models, it is necessary to perform testing of models with directly measured capacity in specific conditions, in order to analyze their application in the specific conditions
Summary
The capacity of approach ( ci ) is defined at the stop line, where traffic streams interact, and is reached when the capacity of the most saturated lane is reached It is a function of traffic volumes of entry lane ( qs - minor stream), roundabout ( q p - priority stream) and exit lane ( qi ). There are many roundabout capacity models in the world, which are classified into three key groups, empirical models (based on measurements of actual capacity of intersections in saturated flow conditions), theoretical models derived from gap acceptance theory and microscopic simulation models based on modeling of driver behavior, kinematics and vehicle interactions [3]. Indirect measurement method involves capacity estimation by certain theoretical models, but with calibration of key traffic flow parameters. Measured capacity is used here to test selected capacity models
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