single-tracking

single-tracking (uncountable)

2. (rail transport) The reduction of a double-track rail line to a single track, when the extra capacity of a double-track line is no longer required.

   Synonyms: dedoubling, singling

   • 2023 March 8, Howard Johnston, “Was Marples the real railway wrecker?”, in RAIL, number 978, page 51:

     Why was there not more talk about destaffing, pay trains, or simplified signalling or single-tracking?

• single-track, single track; one-track