Two Halves Meet. On October 30, 2016, an Amtrak Northeast Regional led by ACS-64 AMTK 610 passed SEPTA Silverliner IV SPAX 132, which was stopped at the Bristol, Pennsylvania, station with a three-car consist. As sunset approached, the sky was split between clouds and sun. Thanks to the low light, the reflection of the Silverliner car is clearly visible on the side of the Amtrak motor.