Been hearing from some that ptc won’t keep a train from hitting the rear of the train in front of them . They say if you doing 20 mph or less, ptc on second train will let them get too close to rear of train in front of them. Has anyone experienced this ?
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I don't understand why other SUBs haven't gotten the WIUs on hand throw switches. Yes it's a pain in a-s to test but knowing the position of that switch to a train going 49 mph could stop a disaster. Not just someone not lining it back to normal, but also temp swings fu-k with switches. So if it opens a quarter of inch or more it will not show normal.
initiated one recently and it had us showing approximately 1.5 miles off our real position, wrong track, and moving in wrong direction.
Never seen that before...
PTC does not know the location of other trains - until the next generation which is PTL - Positive Train Location.
PTC only knows the location of wayside assets and the aspects and position of wiu monitored signals and switches.
I thought one of the the eventual goals of PTC was to run trains as close as possible and eventually eliminate blocks altogether. I thought this was referred to as 'moving blocks'.
I was asking about 2 trains on single main track no switches Some crews say ptc will let a train too close to rear of another train. For question about an absolute red signal , I think ptc will show 2 different types of alerts on cab screen . Then shutdown train when too close to red.
How does PTC work when getting across an absolute red?
Wrong, PTC sees every hand throw switch IF it has a WIU (wayside interface unit) along with a SWCC. (Switch Circuit Controller). Brownsville Sub has every main line hand throw switch turned on and active. I have 16 to test every quarter. But some Subs don't have them yet.
It's happened repeatedly. I know of 3 incidents off the top of my head. PTC also doesn't see manual switches. So a train can cook along in PTC territory at 60 mph and encounter a mainline switch left wide open by maintenance and pile up in an industry and yeah that happened too