The middle road at the LMS NCC Waterside station was often used to store spare carriages and it was not a loco release. In the days of steam there was a lot of goods traffic to and from Derry. So a spare engine would usually take the coaches out and release the train loco for servicing at the Waterside shed and spare locks push carriages back into the station. In the early days like Sligo you had an arrivals and departure platform.