A "Q" train for Stockton weaves through the series of curves at Ludlow.
Chicago-Stockton stacks are westbound at Ludlow on BNSF's busy "Transcon".
BNSF ES44C4 7027 leads a Chicago-Stockton Q train west on the busy Needles Sub on the less steep but longer in distance Main #1 between Ibis and Homer. Main #2 is in the foreground.