Metra's new BNSF schedule starts today!!! On some trains, you'll see: -New arrival and departure times -Added or removed stops -Renumbered Trains Metra says it had to revise the schedule due to the upcoming implementation of PTC or Positive Train Control. That’s the federally mandated safety system that will automatically stop a train if the engineer fails to or exceeds the speed limit. Metra’s busiest line (the BNSF line) will be the first to fully implement the system. Train crews will have to