This position is countered by the fact that, unlike new rail construction projections in low-density areas in America, the Central Subway would augment access to the densest portions of Chinatown and the northern Financial District. Current transit access to these areas is provided entirely on the surface through small blocks that feature intense pedestrian activity and narrow streets with multi-modal street congestion. Other, lower-cost rapid transit options were explored, such as bus rapid transit (BRT), but were rejected in part because these conditions do not support the basic features of efficient BRT operations.