Analisis Lalu-lintas Di Pintu Keluar Tol Ungaran

The toll exit of Ungaran recently still causes congestion. This is due to the local flow around the road is high, causing a local road with capacity of 9 meters for two-lane two-way no longer able to accommodate the traffic flow at a peak flow. The application of the signal system at Sidomulyo intersection by the Department of Transportation that expected to be able to reduce congestion has not shown significant changes. Based on these facts, researchers intend to develop a prevention plan program to address the congestion in the toll exit of Ungaran. This study aims to analyze the factors that affect the traffic jam on Letjend Soeprapto Street of Ungaran, so the program can be set up to do an action plan to address the problem of traffic congestion. This study refers to the Manual Kapasitas Jalan Indonesia (MKJI) 1997 and based on signaled plot intersection theory and non-signaled plot intersection theory. Compilation of research carried out by the analysis of problems based on the data from surveys and the traffic data of the Department of Transportation, combined with a logical solution of the existing literature. Based on the analysis, it is known that the performance degradation of Sidomulyo intersection of Ungaran caused by the: 1) function improvement of the Letjend Soeprapto Street which is a local road and used for local stream, burdened by the current out of town so it automatically increases the volume of vehicle, 2) development of industrial zones and residential in Ungaran city, 3) adjacent to the plaza which is the center of activities and entertainment of Ungaran society and its surrounding. By looking at the existing facts, researchers can provide a program plan to address these problems by comparing two scenarios: 1) widening 1.5 meters of road per segment with a fixed cycle time, 2) widening 1.5 meters of road with recalculation of the cycle time. From the analysis can be known that the setting movement changing and adjustment of the cycle time provides a performance improvement against the traffic system on the Sidomulyo intersection. In scenario one more waiting time (with a cycle time of 100 seconds) compared to scenario 2 (with a cycle time of 85 seconds). In addition, the recapitulation of the obtained data shows that the DS average between scenario 1 and scenario 2 is not much different, but the scenario 2 has a better delay so that the second scenario is more suitable compared to the scenario 1