 This layout was retained when the Argyle Line opened in 1979.Following the closure of adjacent (to the south) steel works and East Coast Main Line electrification, the junction layout was revised in 1990/91 to allow Fast Line trains to pass through at higher speeds.It was as a result of these revisions that single lead junctions from the Kirkhill and Cambuslang directions were installed, that contributed to the Newton rail crash.