ROAD GEOMETRY RELATED TO ROAD USER COST AND A BROADENED LEVEL OF SERVICE CONCEPT BY USE OF TRAFFIC SIMULATION

In this paper an ongoing research project is presented aimed at a traffic model on micro level. The model is a basis for a broadening of "the level of service" concept and for evaluation of the road user's cost with regard to vehicle traffic on two lane rural road network. The traffic model is presented by simulation technique. In an event-governed simulation program the speed profile of driver-vehicle units is calculated and traffic measures of efficiency are evaluated. The simulation program is applied for the study of how the level of service and the road user's cost are influenced by the road condition, ruling speed limits and traffic regulations as well as driver-vehicle characteristics at various traffic volumes and compositions. (a) (TRRL)