Bus laneJapan
15. Bus lane
A bus lane is a traffic lane reserved primarily for buses or other authorised public-transport vehicles. It is intended to improve the reliability and flow of public transport by allowing authorised vehicles to avoid general traffic congestion.
Other road users, such as taxis, cyclists, motorcycles or vehicles carrying several occupants, may also be permitted when signs expressly allow them. The operating hours, permitted vehicles, direction of travel and rules for entering or crossing the lane depend on local traffic signs and regulations.
Wikimedia.org • 運動会プロテインパワー • CC BY-SA
Which vehicles may use a bus lane in Japan?
Japan distinguishes an exclusive lane from a priority lane for fixed-route buses. An exclusive lane restricts users; a priority lane imposes duties on other traffic so that the bus can use it.
🔗 laws.e-gov.go.jp • Japan Road Traffic Act — Articles 20 and 20-2
🔗 laws.e-gov.go.jp • e-Gov — current enforced Road Traffic Act, revision metadata and full text
🔗 npa.go.jp • NPA — Traffic Lights and Road Signs, official English definitions
🔗 npa.go.jp • NPA — traffic instruction handbook, sign groups and road use; read with current Act
May bicycles and motorcycles use a bus lane in Japan?
Check which type of lane the sign establishes and which vehicles it covers. A bus-priority lane should not be described as an absolute bus-only prohibition, and cycle or small-vehicle exceptions must follow the actual rule.
🔗 laws.e-gov.go.jp • Japan Road Traffic Act — Articles 20 and 20-2
🔗 laws.e-gov.go.jp • e-Gov — current enforced Road Traffic Act, revision metadata and full text
🔗 npa.go.jp • NPA — Traffic Lights and Road Signs, official English definitions
🔗 npa.go.jp • NPA — traffic instruction handbook, sign groups and road use; read with current Act
Lane for buses.
English • Traffic sign 327の5 • Priority lane for scheduled buses and similar vehicles. Gives these vehicles priority; differs from a bus-only lane symbol. Do not obstruct eligible buses and other covered vehicles.
日本語 • 327の5 • 路線バス等優先通行帯。 路線バス等を優先する車両通行帯です。バス専用通行帯を示す図柄とは異なります。対象のバス等の通行を妨げないようにしてください。
Sources
🔗 Commons.wikimedia.org
🔗 Laws.e-gov.go.jp • 道路標識、区画線及び道路標示に関する命令、別表第一・第二
🔗 Mlit.go.jp • 国土交通省、道路標識一覧
🔗 Npa.go.jp • 警察庁、交通規制基準(令和8年3月16日改正)、PDF 108ページ
SVG source: Monaneko (talk) • Public domain • Original revision 2012-08-26. Wikimedia original unmodified.
Does bus-lane access also allow stopping or parking in Japan?
In a priority lane, other traffic must allow an approaching fixed-route bus to use the lane and must not enter when congestion would prevent leaving it. Parking or stopping is a separate question and remains subject to the Road Traffic Act.
🔗 laws.e-gov.go.jp • Japan Road Traffic Act — Articles 20 and 20-2
🔗 laws.e-gov.go.jp • e-Gov — current enforced Road Traffic Act, revision metadata and full text
🔗 npa.go.jp • NPA — Traffic Lights and Road Signs, official English definitions
🔗 npa.go.jp • NPA — traffic instruction handbook, sign groups and road use; read with current Act

Traffic rules
Japan