Monday to Saturday there are three trains per hour from Gartcosh to Glasgow Queen Street westbound and Cumbernauld eastbound with an hourly service continuing to Falkirk Grahamston. Two of the westbound services run via Queen St Low Level to Partick and Dalmuir over the North Clyde Line whilst the other (the service to/from Falkirk) terminates at Queen St High Level.[2]
On Sundays there is an hourly service to Partick via Queen St LL and to Cumbernauld.
2018/19
From December 2018, a new half hourly Glasgow - Edinburgh via Cumbernauld and Falkirk Grahamston service started, replacing the hourly DMU service and taking over the existing EMU service between Springburn and Cumbernauld. The service uses new Class 385 EMUs.