The growth of economy in Yogyakarta is increasing. The business that very popular now is on culinary field. Building Tempo Gelato Restaurant have many effect for the traffic in Taman Siswa intersection. The purpose of this research is to analyze the performance of Taman Siswa Intersection and to give a solution because the existence of Tempo Gelato. This research method is collect data with traffic counting, then do the traffic analysis with MKJI 1997 method plus the result of analysis trip generation and trip attraction. The result from north side capacity is 353 smp/hour, south side is 205 smp/hour, east is 393 smp/hour, and west is 504 smp/hour. DS for north side is 0,402, south side is 0,989, east is 0,531, and west is 0,408. Long queues for the north side is 46 m, south side is 100 m, east is 48 m, and west is 31 m. The average of long delay for north side 49,427 sec/smp, south side is 174,039 sec/smp, east is 32,401 sec/smp, and west is 40,764 sec/smp. The average of long queues is 76, 781 sec/ smp, so the result of service level is F(very bad). After give the alternative to reset the cyclus time, the result for the north side capacity is is 258 smp/hour, south side is 330 smp/hour, east is 654 smp/hour, and west is 827 smp/hour. DS for north side is 0,589, south side is 0,621, east is 0,602, and west is 0,612. Long queues for the north side is 31 m, south side is 50 m, east is 42 m, and west is 29 m. The average of long delay for north side 46,162 sec/smp, south side is 40,203 sec/smp, east is 36,299 sec/smp, and west is 38,539 sec/smp. The average of long queues is 42,865 sec/ smp, so the result of service level is E (bad). The service level is increase from F to E.