Union Pacific's William Van Trump, Norfolk Southern's Ray Rumsey talk positive train control (PTC) at RSSI (May 18-19)

Editor Pat Foran interviews Union Pacific Railroad's William Van Trump and Norfolk Southern Railway's Ray Rumsey at the Railway Systems Suppliers Inc.'s 50th C&S exhibition in Omaha, Neb. (May 18-19, 2010). The topic: positive train control (PTC) planning and implementation.