 Penn Station's opening led to reduced PRR traffic at Exchange Place.On October 1, 1911 the Hudson and Manhattan Railroad, a rapid transit system (now called Port Authority Trans Hudson or PATH), began running over the PRR line west of Waldo Yard, connecting with the new Manhattan Transfer station at Harrison.The Lehigh Valley Railroad, which had operated its "Black Diamond" train from Buffalo, New York since 1896, ended service to Exchange Place in 1913.