The aim of this study is to assess the feasibility of Metro Line 4 extensions by building an accurate, up-to-date transport model that utilizes on-ground traffic and Origin-Destination data. The model should also utilize stated-preference surveys to assess potential modal shift. TfC provided the methodology, data from the field, and further analyses of the data received from the following field research surveys: The team created a GIS database for the road network in the GCR, ready to be integrated into a 4-step transport demand model