The day return trains that operated out of Melbourne on Sundays were called "Sunday Excursion Trains" and from the early 80's on always featured double heading due to the fact that should a train hauled by a single loco break down there were no other trains around to get a replacement loco from.

B84 - B 80 are on a down Swan Hill Sunday Excursion approaching Middle Footscray on April 6 1986