ALBANY Rensselaer Passenger Sta.(Albany/Rensselaer NY) (OPERATIONAL) ARBOR Ann Arbor Passenger Sta. (OPERATIONAL) BWI BWI Rail Station (Linthicum Hts. MD) (OPERATIONAL) CARROLL Carroll Interlocking (Hyattsville MD) (OPERATIONAL) CHICAGO Chicago Weather station (OPERATIONAL) CLINTON Clinton Interlocking (Clinton CT) (OPERATIONAL) CORK Cork Interlocking (Lancaster PA) (OPERATIONAL) CREEK Battle Creek Passenger Sta. (Battle Creek MI) (OPERATIONAL) DAVISVILLE Wickford C&S HQ, (N.Kingstown RI) (OPERATIONAL) EDGEWOOD Edgewood Impact Detector Site (Edgewood MD) (OPERATIONAL) FRAZER Frazer Interlocking (Frazer, PA) (OPERATIONAL) GRUNDY Grundy Interlocking (Bristol PA) (OPERATIONAL) HARTFORD Hartford Passenger Station (Hartford CT) (OPERATIONAL) HUDSON Hudson Passenger Sta. (Hudson NY) (OPERATIONAL) JACKSON Jackson Passenger Sta. (Jackson, MI) (OPERATIONAL) LAWTON Lawton Track Office (Lawton, MI) (OPERATIONAL) MANSFIELD Mansfield Impact Detector Site (Mansfield MA) (OPERATIONAL) MERIDEN Meriden Passenger Station (Meriden CT) (OPERATIONAL) MICITY Michigan City, Indiana (OPERATIONAL) MONMOUTH Midway Interlocking (Monmouth Jct. NJ) (OPERATIONAL) NILES Niles Engineering HQ. (Niles, MI) (OPERATIONAL) NLC New London Passenger Sta. (New London, CT) (OPERATIONAL) PARK Park Interlocking (Parksburg PA) (OPERATIONAL) PHILA Zoo Interlocking (Philadelphia, PA) (OPERATIONAL) PRINCE Prince Interlocking (Principio MD) (SILENCED) PRV Providence MW Base (Providence RI) (OPERATIONAL) READ Transfer Interlocking (Readville MA) (OPERATIONAL) RHINECLIFF Rhinecliff Passenger Station (OPERATIONAL) ROY Roy Interlocking (Middletown PA) (OPERATIONAL) RUTHBY Ruthby Interlocking (Newark, DE) (OPERATIONAL) SCHENECTADY Schenectady Passenger Station (OPERATIONAL) SUSQUEHANNA Susquehanna Bridge (SILENCED) UNION Union Interlocking (Rahway NJ) (OPERATIONAL) WILMINGTON Wilmington Shops (Wilmington, DE) (OPERATIONAL)