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Metrolink head-on crash in Chatsworth
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[QUOTE]Originally posted by CG96: [QB] Automatic Train Stop (ATS), with the analogue inductors, is something of an obsolete technology. It is also expensive, with a return on investment such that many RRs have chosen not to install it. I also have my doubts as to, if installed, ATS would make any difference here in actual operation. The trains in question would have passed all wayside indicators before crashing. Cab signals alone would be a much better choice in these situations. It should also be noted that for any speeds in excess of 80 mph, either cab signals alone, or Automatic Train Control, or ATS, must be used. That has been a US regulation since at least 1951. That regulation was also part of the downfall of many passenger trains, as, rather than install these systems at the time the reg was promulgated, many private RRs simply chose to reduce their speed limits to 79 mph or less. [/QB][/QUOTE]
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