on the Harlem Line to test the technology, with the hope of adding them to all commuter trains on the New York Central. They were meant to be used when delays in service occurred. On January 10, 1964, the PSC approved plans by the New York Central to implement zoned fares in the southern part of the New York commutation area (north to North White Plains). The plan went into effect on January 22. Though it was meant to be experimental, and to last one year, this was kept in place. On July 1, 1964, expanded off-peak local and express service was implemented on a pilot basis. On February 1, 1965, the New York Central began operating zone schedules for some outbound evening rush hour trains. It expanded this to some inbound morning rush hour trains to Grand Central on June 28, 1965. The implementation of zone scheduling was intended to speed trains service and reduce delays. Three additional morning inbound trains were added to facilitate the new zone schedule. Four zones were set up: Fleetwood and Mount Vernon were in Zone A, Crestwood, Tuckahoe and Bronxville were in Zone B, Hartsdale and Scarsdale were in Zone C, and White Plains-North and White Plains were in Zone D. Zone schedules operated as follows: the first train ran non-stop to Grand Central from the closest zone-Zone A. The second train would serve Zone B stops and run non-stop to Grand Central, the third would run non-stop to Grand Central after making Zone C stops, and the fourth would do the same, but for Zone D stops. From June 28 to October 31, 1965, train 908 leaving Brewster at 7:23 a.m. and train 945 leaving Grand Central at 5:39, on a pilot basis, began running as through trains, without the need to change locomotives at White Plains-North Station using a pair of dual-power locomotives leased from the New York, New Haven and Hartford Railroad. Decline under Penn Central At the end of World War II, private rail service began a sharp decline with the start of the Jet Age in 1958 and the construction of the Interstate Highway System. NYC, facing declining year-over-year profits, merged in 1968 with its former rival, the Pennsylvania Railroad, forming the Penn Central Transportation Company. Penn Central continued to lose money and attempted several maneuvers to delay bankruptcy, including auctioning off the air rights of Grand Central