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There are 10 kinds of people in the world. Those who understand binary and those who don't.
All the RR stuff from the wreck is off the site (can't tell if the P42 is still on site, as it was always still on the rails) and up at JBLM. The loco got moved past here earlier today (I've heard rumors that the trailer with the Charger Locomotive collapsed a water main or sewer pipe along it's route but don't know if that's correct).They're opening up the 2 left lanes southbound at 5PM.Still no updates for my friends, they all still in the hospitals. The engineer's status of course is being held a tight secret. I don't even wanna post his first name here, as nobody is listing it anywhere that I've seen. I don't want the press to bug his wife, as she's got enough to deal with right now.
If a $100 auto GPS unit is available pre-programmed with the speed limits for the majority of roads and is able to indicate when those limits are being exceeded, then why does it seem so difficult, time-consuming and/or expensive to provide a similar function for railroad locos? Connect the warning output to a Klaxon if that's what's needed to grab the attention of a distracted or dozing engineer. If the engineer fails to respond, then the brakes could be applied.
Sounds like you are describing the elusive PTC system. Or something with a similar functionality.
PTC is more elaborate in that it is also supposed to prevent running through restrictive signals and maintain train separation to avoid collisions. What I was suggesting was more along the lines of a GPS-based (over)speed alarm. Three recent incidents - the one in WA state, the Amtrak derailment near Philadelphia and a Metro-North crash outside NYC - were all speed related, but each only involved the one train. Alternatively, our local municipality has installed solar-powered, radar-based speed indicating signs near certain school crossings. The speed display changes from steady white to flashing red when it detects a vehicle exceeding the posted limit. Perhaps such devices might have alerted the engineer in those aforementioned situations and averted the ensuing disaster.
I understand, but he specifically mentioned If the engineer fails to respond, then the brakes could be applied which seems to go into the PTC functionality.