Modifies a noun

• road: Charlie did very well with driving on the left - even with the single-track roads.

• lane: Need to Know The approach is down a long, single-track lane.

• railroad: Here a tunnel took the single-track railroad through the Alps.

• branch: David Glasspool We are now observing the single-track branch from an over bridge.

• line: Three route miles east of Gravesend, the single-track line to Grain was planned to branch off from.

• connection: The single-track connection with the Arsenal had previously taken out of use in 1967, after the military site had been severely degraded.

Modifying Another Word

• initially: The line opened to passenger traffic on 2nd June 1862, worked by the LC&DR from the outset, and was initially single-track.