 These include the "Pacific Surfliner", "Capitol Corridor", and "San Joaquin", supplemented by an extensive network of connecting buses.Together the California corridor trains accounted for a combined 5,731,795 passengers in fiscal year 2018.Other popular corridors include the Empire Corridor, which consists of trackage between New York City and Niagara Falls, New York, via Albany and Buffalo, New York, and carried 1,517,194 passengers in fiscal year 2018, and the "Keystone Service" from New York City to Harrisburg via Philadelphia that carried 1,519,936 passengers that same year.