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Road definition & classification
/ref> Prefectural roads are marked with a blue hexagon, with the number centered. Most usually end at another prefectural road, or national route, or occasionally at or very close to a Japan Railway station. If a prefectural road does cross into another prefecture, even if for a few hundred feet, its number is not reused by the prefecture it crosses into. Numbers are used only once in each prefecture, regardless of where the road begins or ends. However, there are some major roads running through several prefectures which have the same number in all prefectures involved. For example, the "Sano-Koga line" (''Sano-Koga-sen'', 佐野古河線) that connects Sano city in
''dōro-kyoku'' ("Road Bureau")
parts in English
{{Japan-road-stub *Road
in Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
are roads usually planned, numbered and maintained by the government of the respective prefecture
A prefecture (from the Latin ''Praefectura'') is an administrative jurisdiction traditionally governed by an appointed prefect. This can be a regional or local government subdivision in various countries, or a subdivision in certain international ...
(-to, -dō, -fu or -ken), independent of other prefectures – as opposed to national roads (kokudō), which in legal terms include national expressways (kōsoku jidōsha kokudō), and municipal
A municipality is usually a single administrative division having corporate status and powers of self-government or jurisdiction as granted by national and regional laws to which it is subordinate.
The term ''municipality'' may also mean the go ...
roads ( uhichōsondō). Where a national or prefectural road runs through the territory of a designated major city, the city government assumes part of the responsibility for these roads. By length, 10.7 % of public roads in Japan were prefectural roads as of 2011; by usage, they carried more than 30% of all traffic volume on public roads as of 2007.MLIT ''(Kokudo-kōtsū-shō)'', Road bureau ''(dōro-kyoku)''Road definition & classification
/ref> Prefectural roads are marked with a blue hexagon, with the number centered. Most usually end at another prefectural road, or national route, or occasionally at or very close to a Japan Railway station. If a prefectural road does cross into another prefecture, even if for a few hundred feet, its number is not reused by the prefecture it crosses into. Numbers are used only once in each prefecture, regardless of where the road begins or ends. However, there are some major roads running through several prefectures which have the same number in all prefectures involved. For example, the "Sano-Koga line" (''Sano-Koga-sen'', 佐野古河線) that connects Sano city in
Tochigi prefecture
is a Prefectures of Japan, prefecture of Japan located in the Kantō region of Honshu. Tochigi Prefecture has a population of 1,943,886 (1 June 2019) and has a geographic area of 6,408 Square kilometre, km2 (2,474 Square mile, sq mi). Tochigi ...
and Koga city in Ibaraki prefecture
is a Prefectures of Japan, prefecture of Japan located in the Kantō region of Honshu. Ibaraki Prefecture has a population of 2,871,199 (1 June 2019) and has a geographic area of . Ibaraki Prefecture borders Fukushima Prefecture to the north, ...
is continually designated as prefectural road 9 in all four prefectures it runs through, namely Tochigi, Gunma
is a prefecture of Japan located in the Kantō region of Honshu. Gunma Prefecture has a population of 1,937,626 (1 October 2019) and has a geographic area of 6,362 km2 (2,456 sq mi). Gunma Prefecture borders Niigata Prefecture and Fukushima P ...
, Saitama and Ibaraki.
Some prefectural roads will also at times run for a short distance concurrent with a national route, but it is more common to see this with other prefectural roads.
Numbers used for national routes that run through a prefecture are often duplicated by prefectural routes but a national route and a prefectural route bearing the same number rarely if ever meet or cross each other.
See also
*National highways of Japan
Japan has a nationwide system of distinct from the expressways. The Ministry of Land, Infrastructure, Transport and Tourism and other government agencies administer the national highways. Beginning in 1952, Japan classified these as Class 1 or ...
* Expressways of Japan
The of Japan make up a large network of controlled-access toll expressways.
History
Following World War II, Japan's economic revival led to a massive increase in personal automobile use. However the existing road system was inadequate t ...
References
External links
*''dōro-kyoku'' ("Road Bureau")
parts in English
{{Japan-road-stub *Road