EFFECTS ON TRAFFIC OPERATION OF A SLOW MOVING VEHICLE ON TWO LANE RURAL ROADS --14TH ARRB CONFERENCE, 28 AUGUST - 2 SEPTEMBER, 1988, CANBERRA, ACT, AUSTRALIA; PROC. PARTS 1 - 8

The model developed describes the effects on traffic operation of a journey of a slow moving vehicle with a speed of 10-40 km/h. The model is on a macroscopic level but uses recent results of microscopic traffic stream research. The supply of gaps is described by an exponential tail model as an alternative to the negative exponential distribution. The use of gaps is according to an Australian model with fresh parameters from Dutch overtaking experiments. A special model was developed for the congestion branch of the fundamental diagram. The main input of the model consists of the flows in both directions, percentage of trucks and the speed and journey length of the slow moving vehicle. The outputs of the model are: number of overtakers; size and duration of disturbance; number of affected vehicles and their delay; surface in the road time plane with congestion. A computer program for a personal computer with interactive input procedures and several graphical outputs has been developed, which makes it very easy to use the model (a). For the covering record of the conference, see IRRD no 808936.