Service: ACS-64 #66 08:14 As I was coming off the ballon loop heading to Amtrak Runner at the yard just outside of Boston I noticed a F40 coming my directions but saw no signal to stop it, it then crashed into the side of a wagon of my acs-64 causing service failure by derail I set all track points (even ones that would probably auto) once I finished most of the loop and got directions from the go via XSX ACS-64 Boston Sprinter Service 66 at 08:14