Amtrak has cut Northeast Corridor service between Boston, New York and Washington, D.C., to about 40 percent of its normal weekday schedule, the rail operator announced. Other service cuts include suspension of Amtrak's Keystone Service in Pennsylvania, cancellation of its Winter Park Express service for the rest of the season and reduced service on other lines including Amtrak Downeaster, New York State Service and Amtrak Hartford Line and Valley Flyer. Café service also is suspended on some trains between New York and Washington. Amtrak already had issued a waiver on change fees for all reservations made before April 30.