Route number is 4号路線. Remember it—the number stays the same everywhere: on the stop display, in apps, on the vehicle itself. Look for 4号路線 specifically. If you're not sure you found the right stop, just ask someone nearby: 'Does bus 4号路線 stop here?'

This route serves the Tokyo (Japan) region. In larger metro areas, routes can pass through several districts or towns. To know for sure if it works for you, pull up the route map and check the key stops and direction.

Starting point is 三鷹駅北口. Usually at the first stop there's a turnaround or layover space where drivers rest between runs. If you want to guarantee a seat, get on here—the vehicle is just starting out and still mostly empty.

Final stop is 三鷹駅北口. Everyone gets off here, the vehicle turns around and heads back after a few minutes. Missed your stop? No big deal—just ride to the end and come back on the same route.

Key stops along the route: 三鷹駅北口;けやき橋北;西久保コミセン;西久保公園;久保公園・とらいふ武蔵野;浄水場東;浄水場北;五中北;武蔵野館前;関前コミセン南;関前コミセン;大師通り公園;市民の森公園;関前三丁目中央;関前公園;五小通り;小森病院;西久保三丁目;宮前通り北;宮前通り中央;三谷通り・西久保保育園前;ふじ公園西;三谷公園;武蔵野警察署前. These are handy as landmarks and transfer points. First time riding? Note down 2–3 stops closest to where you're heading and track them on the map or listen for announcements—easier than missing your exit.

On transit maps this route is marked in #06903b. Color helps you spot the line quickly and tell it apart from others. In some cities the line color appears on stop signs or even on the vehicles themselves. The exact shade might vary between sources—go by route number and endpoints instead.

Yes. Circular routes run in a closed loop, regular routes go between two endpoints. To avoid going the wrong way, check the destination on the display and confirm direction using a map or stop list.