Penukal Abab Lematang Ilir (PALI) District is a new district in South Sumatera Province, Indonesia which has been established since 2013 and has five subdistricts and 72 villages. PALI district continuously implements regional development to improve the living standard and economy of the community. Consequently, the infrastructure development of road network based on needs of improvement of accessibility and the spatial area is a precondition for economic and regional development and improvement of competitiveness of PALI district in South Sumatera Province. This research aimed to study the needs of infrastructure development of road network in PALI District regarding the economic and regional development and other sectors based on accessibility measurement. The data of existing infrastructure and regional condition and spatial area plan are activity centres, spatial patterns, and strategic area to be fundamental in determining the infrastructure development of road network for either internal or external accessibility of PALI District area. The existing condition based on the accessibility values show that several villages which are the priority of development have low accessibility so that the development of road infrastructure networks is needed. The simulation of scenarios of road network development was conducted to get the best accessibility score in order to support the plan of the existing economic and regional development. The result of the study is the plan of infrastructure development of road network of PALI District that can really support economic growth and regional development in PALI District.
Analysis of regional accessibility is very important in regional development, where good accessibility is needed to support regional development, especially for potential areas. In the accessibility analysis, it is necessary to have regional spatial data that shows the potential of the area, and accurate road network data including geometric and road network conditions required for accessibility calculations, in which the data derived from the road database were the main and accurate data source. Penukal Abab Lematang Ilir (PALI) is a new district in South Sumatra and has great plantations and mining potential. PALI District continues to develop its road network to improve regional accessibility. The road database for PALI District has been developed since 2017 and has complete road data covering162 roads with a total length of 555.85 km. This paper discusses the development of regional accessibility, through road improvement and road network development in PALI District using the existing spatial plan and road database. The calculation of accessibility was carried out using the principle of regional connectivity and considering the effect of distance and road network conditions. The network scenario was developed and the accessibility analysis provided the best road network development plan for the regional development of PALI District.
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