alan diehl and russell quimby.ant to bring up sound gentlemen from this press conference where we hear robert talk about some of this equipment. listen to this. >> was the train equipped with any type of device that could have or should have slowed it down to keep it within its limits? and amtrak, throughout a good bit of the northeastern carter has a system called advanced civil speed enforcement that's called acses, acses is installed throughout most of the northeast decarter for amtrak. however, (?) it is not installed for this area where the derailment occurred. >> now, what's important is that sumwalt said if it had been installed it could have prevented the crash. turning now to our experts. russell quimby to you. my confusion. is this equipment installed on the train or the tracks? how does it work? >> it's both. signals through the track. and it received it by equipment on the local locomotive. what bothers me, this track -- the track speed for that curve is 50 miles per hour. that is significant. it's not