Amtrak switcher fleet By | May 20, 2011 See where Amtrak switchers roam Email Newsletter Get the newest photos, videos, stories and more. Get Updates Amtrak MP15 No. 576 leads a work train across the Northeast Corridor at Newark, Del., on Jan. 19, 2011. Michael S. Murray In the July 2011 issue, we look at Amtrak’s switcher fleet. Here’s a glimpse at where the passenger railroad assigned its switchers in April 2011.