The solution of traffic congestion due to side frictions along the market area at national arterial road Tanjungsari Sumedang

Side frictions along the market area of Tanjungsari often cause traffic congestion during peak hours. The traffic congestions are caused by the high frequency of side frictions, which may decrease the effective road capacity. This paper to seek the influence of the dominant side frictions using the degree of saturation, as well as provide some effective alternative solutions to rural standard for 10 years. The two alternatives solutions, such as by widening road up to 2 meters and detouring with widening road up to 3.5 meters. Are the analysis results shows that, the most effective alternative solution is a detouring with widening road up to 3.5 meters because it can correspond with rural standards for next 10 years. The other reason considering the operation of Cisumdawu toll road may reduce traffic flow by 28% to 34% along market area using rural service standard. The predicted result, which relies on degree of saturation when Cisumdawu toll road has been operated is 0,51 for the direction of Bandung-Sumedang, otherwise is 0,74 of Sumedang-Bandung.