Yutorīto Line (ゆとりーとライン Yutorīto Rain?) is a bus rapid transit line in Nagoya, Aichi, Japan. The line is officially called Guideway Bus Shidami Line (ガイドウェイバス志段味線 Gaidowei Basu Shidami-sen?). Its official nickname, Yutorīto Line, is a portmanteau of yutori (ゆとり?, "relaxed") and street (ストリート sutorīto?). As such, the name is also unofficially spelt Yutreet Line. The line is owned by Nagoya Guideway Bus, whose name is also often used as the alternative name for the line. The whole line opened on March 23, 2001.
The line consists of the guided bus segment on a viaduct dedicated track in central Nagoya and the ordinary bus segment on public road. Vehicles go directly between the two segments. The guided bus segment runs between Ōzone, Higashi Ward and Obata Ryokuchi, Moriyama Ward. Nagoya Guideway Bus manages the guideway facilities and cars, while Nagoya Municipal Bus operates buses on the line. This is the only guided bus line in Japan. The line is legally considered as a sort of railway, like monorails or automated guideway transits in the country.