The presentation focuses on the development and the main components of a simulation framework, named P-TRANE, for modeling the bus transit network evolution defined as P-TRANE. Using a GIS-based interface, P-TRANE develops predictions of changes in the bus transit network and service functionality for future time steps. These changes, triggered by rules that represent the periodic service standards review process, are influenced by several variables, such as changes in future transit ridership and future land-use. P-TRANE was developed as a transit supply prediction component for the ILUTE simulation framework, aiming to produce future bus network information for ILUTE. However, it could usefully function as a decision support system tool for transit planners and transit agencies. Preliminary model results, with testing using the Toronto Transit Commission bus network as a case study, show that it is successful in identifying transit routes prone to frequency changes (poor performance and/or overcrowding). Furthermore, results show that the P-TRANE GIS Module is a promising tool capable of proposing new bus lines, including feeder lines serving rapid transit projects/stations.