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BNSF Arizona Collision on Transcon, One Dead

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<p>[quote user="SD70Dude"]And just backtracking a bit here, wasn't this fatal crash between two pieces of railway equipment? Even the current diet-PTC system should have seen the two heading towards each other and taken some sort of action.[/quote]</p> <p>Wasn't it you who posted the following: [quote]</p> <blockquote class="quote"> <div class="quote-user">jeffhergert</div> <div class="quote-content"> <p>PTC enforces the top end of restricted speed.  It will make a penalty application if speed rises above 21MPH.  (I've noticed the PTC speedometer, that goes by GPS, is usually 1 to 2 mph slower than the locomotive's speedometer.)  Since PTC doesn't know where the obstruction is in the block, it can't stop you short.  It only keeps the collision at a relatively slow speed.  But still fast enough to cause damage that can lead to, and has led to, fatalities.  It will query the position of facing point switches.  Which requires the engineer to select the correct position.  If no position is selected or the open position is selected, the PTC will then stop the train short.</p> <p>Jeff </p> </div> </blockquote> <p>To refresh everyone's memory.<br />[/quote]</p> <p>As I understood it was a rear end collision and the overlay PTC system doesn't know the location of the rear end of the preceeding train (rail train in this case)<br />Regards, Volker</p>
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