Abstract

This work introduces a new route-based equilibrium assignment formulation and algorithm for congested transit networks. It is an extension of De Cea and Fernandez (1993), which implements congestion effects in the boarding process and introduced the concept of effective frequencies. That seminal work provides a solution algorithm for the equilibrium problem that takes advantage of two main simplifications. First, it limits the number of route sections under consideration (i.e., it considers a reduced set of attractive services for users to choose from on each leg of their trip). Second, it assumes that the flow split between attractive services can be estimated using the nominal frequencies of the services instead of the effective ones.