Japan National Route 48 is a designated national highway within the road network of Japan. It is assigned the route number 48 and is administered by the Ministry of Land, Infrastructure, Transport and Tourism (MLIT), which is responsible for the planning, construction, and maintenance of national highways throughout the country.
The highway forms part of the broader system of national routes that connect prefectural capitals, major cities, and other significant destinations across Japan. As a national route, it is subject to standards set by the MLIT regarding road width, signage, and safety measures, and it typically serves both local and inter‑regional traffic, including passenger vehicles, commercial transport, and public transit.
Specific information regarding the exact termini, total length, route alignment, and the prefectures traversed by National Route 48 is not available in the current encyclopedic sources consulted. Consequently, detailed attributes such as major junctions, historical development, or traffic statistics cannot be provided without further reliable references.