A SYSTEM SELECTION MODEL OF AN URBAN TRANSIT ROUTE

For the selection of the urban transit system an analytical model has been developed in order to minimize different objective functions: Generalized User Cost (GUC), Transit Company Cost (TCC), Local Authority Cost (LAC), and Central Government Cost (CGC). Different expressions of the cost (user travel time, service cost, investment cost) will be considered depending on the selected objective function. Every kind of cost is an analytical function of relevant service variables as frequency, number of stops, vehicle size, route length, and travel length. An analytical model applied to main transit systems (bus, tram, LRT, AGT and subway) for one project variable (selected between the relevant ones) permits to define the minimum cost system for the input demand value.