noun
single-track
Refers to a single-track road, railway, or path, as opposed to double-track or multi-track. Used in transportation and outdoor contexts.
この山道はシングルトラックだから、車のすれ違いが難しい。
This mountain road is single-track, so it's hard for cars to pass each other.
マウンテンバイクでシングルトラックを走るのが好きだ。
I like riding single-track trails on my mountain bike.