The EM class have served as the primary rail commuter vehicle since their introduction in 1982, running in anything from a single unit (2-cars) to an 8-car unit depending on the service being operated.
Two units have visited Johnsonville on test trains; on Sunday 14 June 1992 EM 1004 and its trailer ET 3004 was towed behind shunter DSC 2285 to measure clearances at platforms and tunnels [REF].