Origin of single-track
Examples from the Web for single-track
At the time we write it was a single-track road from the Big Y to its terminus.
Popes army was out of subsistence and forage, and the single-track railroad was inadequate.The Civil War Through the Camera|Henry W. (Henry William) Elson
The railroad was single-track, so trains could pass only where there was a siding.Tom Strong, Lincoln's Scout|Alfred Bishop Mason
On single-track, transcontinental lines, the freight trains wait at the divisions and follow out after the passenger trains.The Road|Jack London
Single-track railways, costing 4,000 per mile, are now the order of the day.Australian Pictures|Howard Willoughby