<![CDATA[The Trans-Regional Toll Road is a network of controlled-access highways that connects activity centers and strategic areas to enhance connectivity, promote equitable development, and support economic growth. In addition to serving as transportation infrastructure, certain toll road sections have the potential to be developed as multifunctional infrastructure (dual-use infrastructure) through their utilization as emergency runways (highway emergency runways), as demonstrated in several countries, including the United States, Poland, Sweden, Finland, France, and the United Kingdom. This study aims to analyze the technical suitability of toll roads for use as aircraft runways, identify their implications for the Regional Spatial Plan (RTRW), and formulate technical and spatial criteria and a development concept for multifunctional infrastructure without compromising the primary function of toll roads as transportation infrastructure. The study employs a mixed-methods approach with a case study of the Trans-Sumatra Toll Road section from KM 228+000 to KM 231+400 in Way Serdang District, Mesuji Regency, Lampung Province. The data include road geometry, pavement structure, Pavement Classification Rating (PCR), International Roughness Index (IRI), skid resistance, Obstacle Limitation Surface (OLS), meteorological conditions, relevant regulations, and spatial planning documents. The analysis was conducted using quantitative and qualitative approaches, complemented by Synthesis Analysis. The results indicate that the studied road section has potential for use as an aircraft runway. Most technical parameters meet the applicable requirements, including runway length, geometric characteristics, pavement structure, PCR, IRI, skid resistance, and meteorological conditions. However, the OLS and existing pavement width require further technical and operational adjustments. From a spatial planning perspective, the utilization of the toll road does not conflict with the RTRW; however, spatial-use control is required along the flight operation corridor. The study produces technical and spatial criteria as well as a development concept for toll roads as dual-use infrastructure.]]>
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