INI
Road Types in Japan - INI
Japanese roads are classified into four types under the Road Act: expressways, national highways, prefectural roads, and municipal roads. Each type differs in managing authority, legal status, and role, forming a hierarchical structure from national trunk roads to local trunk roads and residential streets.
road
expressway
highway
national road
prefectural road
municipal road
infrastructure
[item.expressway]
code=1
slug=expressway
name=Expressway
description=High-speed roads forming the core of the national automobile traffic network.
[item.national-highway]
code=2
slug=national-highway
name=National Highway
description=Roads forming the national trunk road network.
[item.prefectural-road]
code=3
slug=prefectural-road
name=Prefectural Road
description=Roads forming the regional trunk road network.
[item.municipal-road]
code=4
slug=municipal-road
name=Municipal Road
description=Residential roads within municipal areas.