AN ANALYSIS OF CONGESTION FACTORS AT TRAFFIC LIGHT WAITING POINTS IN VICTORY MONUMENT ROUNDABOUT
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Abstract
The purposes of this research are (1) to analyze factors causing congestion within the circle and (2) to determine guidelines for solving the congestion problems. The research utilized two tools: (1) Analysis of Variance (ANOVA) with XLSTAT program and (2) the developed micro-level traffic condition model with the Simulation of Urban MObility program using a database from the Geographic Information Program (QGIS). It is assumed that the average
waiting time and average vehicle queue length are not different among the 5 tested groups according to the specified factors.
The results of this research have shown that the factors affecting traffic congestion are the duration of traffic light, the number of traffic lanes, and the traffic lane directions both during rush hours and outside rush hours. As for the guidelines for solving the congestion problems by modifying the traffic light pattern, it is found that the Queue Storage Capacity method is the most promising method with the following results: (1) during the rush hours, the average waiting time decreases by 1.58 seconds per car or 0.74% and (2) during the rush hours, the average waiting line length also decreases by 0.84 cars or 4.57%. As for outside the rush hours, the results are as follows: (1) the average waiting time decreases by 1.57 seconds per car or 1.41% and (2) the average waiting line length decreases by 1.77 vehicles or 15.02%.
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