Poor traffic arrangements will cause congestion and accidents that could endanger human life, evenmore to the increasing of Traffic in Yogyakarta. The aims of this paper are: first, to identify the level of service provided by the three signalized intersections “Jogja Phone” Yogyakarta at the present time. Furthermore, the result of level of service analysis is low in F level. By re reffing the cycle time the level service is increasing to B. Second, the result used SPSS had known that there was a significantly influence between green ratio, degree of saturation, traffict flow, road capacitysimul-taneously with long queue.
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