single-sided

adj

adj

Having something on one side only.

Unlike the "West Coast Postal" of the L.M.R., the Western Region TPO train is not turned at each end of its journey, and as the coaches with pick-up/set-down apparatus are single-sided, one coach serves the mail exchange points on the down journey, a second coach marshalled the other way round serving the up exchange points.1959 December, “New TPOs for the Western Region”, in Trains Illustrated, page 581:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.