PERFORMANCE ANALYSIS OF THE PLOSO - BABAT ROAD SEGMENT FROM BAWANGAN INTERSECTION TO KABUH INTERSECTION DUE TO INDUSTRIAL GROWTH IN JOMBANG CITY

Population growth and the development of the manufacturing industry in Jombang Regency, particularly along the Ploso–Babat corridor from Simpang Bawangan to Simpang Pasar Kabuh, have had a significant impact on the transportation system and road infrastructure. This road segment plays a vital role as a distribution route for industrial products and for inter-regional mobility. The increase in the number of vehicles, especially heavy vehicles, raises concerns about traffic performance along this segment. This study aims to analyze the performance of the Ploso–Babat road segment between Simpang Bawangan and Simpang Pasar Kabuh due to the growth of surrounding industrial activities. The method used refers to the Indonesian Highway Capacity Guidelines (PKJI) 2023, through the collection of primary data such as geometric surveys, traffic volume, and side friction, as well as secondary data from relevant agencies. The analysis results show a road capacity of 2,543 pcu/hour with a peak volume of 1,515 pcu/hour, resulting in a degree of saturation of 0.60, which is considered smooth-flowing. The average travel time for light vehicles is approximately 8.6 minutes over a 5.3 km segment, with a low category of side friction. Although the road currently supports industrial activities, the potential for increased traffic volume in the future is a serious concern, as the degree of saturation is expected to rise and could exceed the minimum capacity, ultimately degrading the level of service significantly. Strategic measures are needed, such as road widening, surface quality improvement, and proper management of entry and exit access for heavy vehicles from industrial areas. Therefore, infrastructure enhancement is crucial to anticipate future industrial growth.