ExpresswayJapan
3. Expressway
An expressway is a road intended to carry through traffic efficiently, usually at higher speeds than ordinary roads. Expressways often have limited access, multiple lanes, separated carriageways or grade-separated junctions, but their design and legal status vary between countries.
An expressway is not always a motorway. It may have intersections, traffic lights or direct access, and the permitted road users, speed limits and special rules depend on local signs and regulations.
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How do people refer to an expressway in Japan?
Japanese rules distinguish 高速自動車国道 (kosoku jidosha kokudo), national expressway routes, from 自動車専用道路 (jidosha senyo doro), roads reserved for motor vehicles. Urban expressways can belong to the latter category.
🔗 laws.e-gov.go.jp • e-Gov — current enforced Road Traffic Act, revision metadata and full text
🔗 laws.e-gov.go.jp • e-Gov — current enforced decree revision metadata
What speed limit applies to cars on an expressway in Japan?
Do not apply the national-expressway car default to every motor-vehicle-only road. For a motor-vehicle-only road outside that national-expressway category, the unsigned statutory maximum remains 60 km/h. Posted limits can differ; follow the actual signs.
🔗 laws.e-gov.go.jp • e-Gov — current enforced Road Traffic Act, revision metadata and full text
🔗 laws.e-gov.go.jp • e-Gov — current enforced decree revision metadata
Which lane should I normally use on a Japanese expressway?
The National Police Agency advises keeping left and choosing lanes according to your vehicle, speed, traffic restrictions and surrounding traffic. Use the overtaking lane appropriately and return left when safe.
🔗 laws.e-gov.go.jp • e-Gov — current enforced Road Traffic Act, revision metadata and full text
🔗 laws.e-gov.go.jp • e-Gov — current enforced decree revision metadata
What should I do if I miss an expressway exit in Japan?
Continue to the next exit and choose a safe onward route. Do not reverse, make a U-turn to reach a missed exit.
🔗 laws.e-gov.go.jp • e-Gov — current enforced Road Traffic Act, revision metadata and full text
🔗 laws.e-gov.go.jp • e-Gov — current enforced decree revision metadata

Traffic rules
Japan