Enrique Fernandez

Transit Assignment for Congested Public Transport Systems: An Equilibrium Model

We propose a new formulation for the assignment problem over congested transit networks. The congestion effects due to insufficient capacity of system elements transit lines are considered to be concentrated at transit stops. Waiting times on access links are therefore dependent on passenger flows. A special formulation of the transit network is used in order to model correctly the congestion effects. Finally, algorithms for solution are analyzed.

Operators-Users Equilibrium Model in a Partially Regulated Transit System

We present two formulations of a model for finding equilibrium passenger and operator flows in a partially regulated transit system where bus operators are free to choose the routes on which they offer public transport services. The transit fares are assumed fixed and known. The model offers a detailed representation of the transit system network and of the transit users behavior. Congestion effects are also considered as a consequence of the operation of cars and buses over a common road network. Two algorithmic solution approaches are investigated.