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| Kaidō | |
|---|---|
| Name | Kaidō |
| Native name | 街道 |
| Caption | Traditional route marker and milestone |
| Country | Japan |
| Region | Honshū |
| Established | 8th century |
| Era | Nara period |
Kaidō Kaidō are premodern Japanese arterial routes that functioned as principal roads and corridors, linking provinces, post stations, castles, temples, and ports across Honshū, Kyūshū, Shikoku, Hokkaidō and former domains. Originating in the Nara period and systematized during the Edo period, these routes shaped connections among domains such as Echigo Province, Tōtōmi Province, and Musashi Province, and influenced travel associated with figures like Tokugawa Ieyasu, Toyotomi Hideyoshi, and pilgrims to Ise Grand Shrine. The networks intersect with institutions such as the Bakufu and with events including the Sankin-kōtai processions and the Tōkaidō road journeys depicted by ukiyo-e artists like Utagawa Hiroshige.
The term derives from characters 街 (machi) and 道 (michi), used in classical codes such as the Taihō Code and the Ritsuryō system to designate officially sanctioned routes linking provincial capitals (国府) and administrative centers like Heian-kyō and Nara. In administrative notices issued under the Yamato polity and later under the Kamakura shogunate, the nomenclature distinguished kaidō from local roads serving estates of clans such as the Fujiwara and Minamoto. Official definitions in edicts from rulers like Emperor Shōmu emphasized maintenance, milestones, relay stations, and regulations for traveling officials drawn from courts such as the Daijō-kan.
Major development phases include early construction in the Asuka period, codification under the Nara period administrative reforms, militarization during the Sengoku period, and standardization in the Edo period under the Tokugawa shogunate. Strategic improvements occurred to facilitate campaigns by warlords such as Oda Nobunaga and Toyotomi Hideyoshi, while the Tokugawa regime reorganized routes in response to policies like Sankin-kōtai and the need to control movement between Edo and regional seats such as Kyoto and Osaka. Cartographic surveys by offices like the Bakufu cartographers and mapmakers influenced later works including guides used by travelers described in diaries of figures like Matsuo Bashō.
Kaidō are classified by function and jurisdiction: main highways linking Edo with provincial hubs (e.g., the Tōkaidō, Nakasendō, Kōshū Kaidō), secondary routes connecting post towns and shrines (e.g., routes to Ise Grand Shrine or Kumano pilgrimage trails), and domain-controlled roads serving daimyo residences in regions such as Satsuma Domain and Chōshū Domain. Administrative distinctions appear in Tokugawa regulations that named licensed post stations (宿場) and relay stations (伝馬所), overseen by magistrates from offices like the Machi-bugyō and the Daimyō’s commissioners. Military classifications recognized fortified nodes near castles such as Hikone Castle and Himeji Castle.
Kaidō structured commercial flows between ports such as Edo Bay, Osaka Bay, and Hakodate, and inland markets in cities like Nagasaki, Kanazawa, and Sendai. Merchants from guilds including the Ōmi merchants and itinerant vendors used post towns like Tsumago and Magome to conduct trade, while inns and teahouses hosted travelers such as pilgrims to Koya-san and couriers of the shogunal administration. The routes facilitated economic activity tied to cash economies centered in castle towns like Hiroshima and textile production regions such as Echigo and Bizen Province, and were critical during logistics operations for expeditions led by commanders in campaigns like the Siege of Osaka.
Kaidō feature prominently in literature, visual art, and ritual practice: travelogues by poets like Matsuo Bashō, prints by Utagawa Hiroshige and Katsushika Hokusai, and stage settings in kabuki plays produced in Edo evoke scenes along famous routes such as the Tōkaidō. Pilgrimages to shrines like Ise Grand Shrine and Kumano Hongū Taisha used kaidō as sacralized corridors, while festivals in post towns preserved traditions linked to historical travel, including processions reenacting daimyo entries like those of Tokugawa Iemitsu. Modern scholars at institutions such as University of Tokyo and Kyoto University study kaidō in fields influenced by archival collections from archives of National Diet Library.
Contemporary preservation efforts transform segments of historic routes into cultural heritage corridors managed by local governments in prefectures such as Shizuoka Prefecture, Gifu Prefecture, and Nara Prefecture. Conservation initiatives involve municipal offices, non-profit groups, and national agencies like the Agency for Cultural Affairs to maintain post towns, waymarkers, and mileposts while accommodating infrastructure projects by entities such as JR East and highway authorities. Portions serve as tourist trails promoted by organizations including regional chambers of commerce, and are integrated with modern transport networks connecting stations like Tokyo Station and Kyoto Station while informing heritage interpretation in museums such as the Edo-Tokyo Museum and the National Museum of Japanese History.
Category:Road transport in Japan