Samenvatting
Field data on driving and platoon behaviour have been studied. It seems that tailing behaviour is very constant in nature. There seems to be a general and constant group climate. Average gap length in the fast lane is 1,2 sec. in the slow lane 2,5 sec. The first is quite characteristictic, the latter varies between 2,0 and 2,9 sec. Only rain can change these characteristics (10-15% upwards).