Both to the north and to the south of this station PATH tracks diverge into separate routes.  Northward, it's either to Hoboken or into the tunnel to Midtown Manhattan; and south, the subway turns either toward Grove St. and Journal Square, or toward Exchange Place and Lower Manhattan.  Thus in either direction there is much slow running with numerous sharp curves and junctions.  A front-end view provides the rider the opportunity to see closely spaced red signals timed to change color only if trains abide by a very slow pace in the area.