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Roundabout affect adversely on traffic if they do not comply with predetermined standards. This study aims to compare the impact of traffic on non-standard roundabouts with two different methods. The analytical method used is the Indonesia Highway Capacity Manual (MKJI) 1997 [5] and the United State Highway Capacity Manual (USHCM) 2010 [6] using the Synchro7 software. The results of the analysis related to the geometric parameters of the road, calculating the Weaving Ratio (Pw), the Capacity (C), the Degree of Saturation (DS), delays in the weaving interlacing section, traffic delays at roundabouts (DTR), queuing opportunities (QP%) and all in unit a passenger car unit (pcu). The results of the analysis show that the analysis using the Synchro software for USHCM 2000 method, there are significant differences compared to the MKJI 1997 method. By using the Synchro7 software, the degree of saturation obtained is very large, this may be due to the inaccuracy of modeling in the application compared to the actual conditions. In conclusion, with these considerations and traffic behavior in Indonesia, the results of the analysis used are the MKJI 1997 reference method.

Comparison analysis of unstandardized roundabout between MKJI 1997 and USHCM 2000 by simulation model