| Summary: | There is intersection along with road segment. The crossing point of the four- way
traffic flow is called the intersection or roundabout. Traffic control at the roundabout
intersection is the most critical and important in the overall movement of traffic on
the road network in the city . The purpose of this study was to determine capacity of
the roundabout intersection area and to evaluate performance of roundabout. The
standard used in this study is the standard Indonesian Highway Capacity Manual
1997. The experiment was conducted at the roundabout intersection of Samsat
yogyakarta City. The tools used in survey include stationery, cameras, counter,
meter, and stopwatch than Microsoft Excel as a tool to analyze the data. After indepth
analysis of the survey results on Monday shows the level of capacity ( C ) is
10541,013 pcu/hour to BC, the largest value of DS on Monday was 0,919 for
weaving area AB, the highest number of total vehicle volume is 51902 and the
average volume of 6920 veh/hour on the May 13, 2013 while the traffic delays that
occur on May 13, 2013 was 16.899 sec/pcu and average delay - the average is 20.899
sec/pcu, the biggest queue for opportunities on May 13, 2013 is the weaving area AB
that is 29 - 62 %. Thus obtained the performance of traffic flow on Monday, May 13,
2013 is more dense than the performance of the traffic flow on Wednesday, May 15,
2013.
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