For most of the day every other service on the Glasgow-Cumbernauld line is extended to Falkirk Grahamston.  Although the longer services will naturally carry more passengers to and from Glasgow two and three coach sets seem to be used indiscriminately on either working.  Here 158 727 is seen with a service from Grahamston to Queen Street on 5 February.

David Panton [05/02/2011]

A Falkirk Grahamston - Glasgow Queen Street service slows for the Greenfaulds stop on 26 July 2006. Greenfaulds station, on the south side of Cumbernauld, opened in 1989 [see image 12429].
John Furnevel [26/07/2011]

Access point information signs at Greenfaulds. The choice of locations for directions seems pretty random, and it doesn^t say in which direction the (surprising?) gradient rises.
David Panton [19/05/2018]
All photographs of Greenfaulds