For example, the Federal District should assign new BRS corridors to serve this area, co-ordinating with train schedules. This could contribute to tackling congestion, which in the case of Santa Fe has become a major issue affecting economic activity. Such a transformation would also greatly improve access for low-income residents and workers commuting to these areas. Careful analysis of full origin-destination demand patterns will shed light on the extent to which planned upgrades, such as the extension of a second underground line to reach the train station in Mexico City, can solve accessibility' problems, especially at times of high demand.