The suburban electric trains were equipped with apparatus to switch between line voltages, but when the main line electrification from Crewe to Glasgow was implemented, the Maxwell Park section of the Cathcart circle was designated as a diversionary route.
The suburban electric trains were equipped with gear to switch between power sources, but when the main electrification line from Crewe to Glasgow was put into operation, the Maxwell Park section of the Cathcart circle was designated as a detour route.