T here are variation of urban compactness index valuation in South Tangerang City(Wijayanti, 2018) by calculating densification index, and mixed use index.However, for the compactness of a city to develop, it does not only form a highdensity and create a mixed function, where the compact city space structure mustbe supported by a transportation system (Linda, 2015). This study aims to identifythe transportation system to the level of Urban Compactness so that there aredirections to improving or developing the transportation system to develop theconcept of Compact City in South Tangerang. This paper uses descriptivequantitative and comparative descriptive. The variables used include the density ofthe road network, the ratio of the length of the public transport route, and thedistance of the settlement to the bus stop. The results of this study indicate 1) thereare 3 classifications of high, moderate, and low of Urban Compactness levels, 2)from the 7 sub-districts in South Tangerang City, 4 sub-districts indicated as highdensity of the road network, 1 sub-district indicated as high the ratio of the lengthof the public transport route, and 2 sub-districts indicated as high the distance ofthe settlement to the bus stop, and 3) there is a development direction focused onthe classification of high levels of urban compactness, namely the addition of roads,addition of public transport routes, and additional bus stops, which indicate a lowand medium level classification of the transportation system.