The 180 and 184 between them give a 10 minute frequency from Greenfield station to Manchester, however traffic delays and other issues can lead to bunching as seen in this picture, where the next bus is only a short distance behind. 66803 is followed by another similar vehicle - the problem is that two buses so close together mean a large gap in the service somewhere else. The buses are near the Farrar's Arms on 28th May 2005.