Showing posts with label ATS. Show all posts
Showing posts with label ATS. Show all posts
Saturday, August 31, 2024

Portland MAX Signaling Primer

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In the 1980's and 90's North America's light rail renaissance didn't just save money over traditional urban metro systems by...
Saturday, December 17, 2022

SEPTA Suburban Trolley Signaling: Past and Future

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Light rail is currently the locus of signaling innovation in North America due to its mix of limited regulation, low budgets and legacy syst...
Thursday, February 4, 2021

BNSF to Retire Most ATSF ATS on 2/15/21

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On Presidents Day 2021 (likely at Midnight between Sunday and Monday), in a move that was entirely foreseen and entirely understandable (unl...
1 comment:
Sunday, July 26, 2020

Chicagoland CNW ATS Retired

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The Intermittent inductive automatic train stop system in service on two former Chicago Northwestern commuter lines was taken out of servic...
3 comments:
Tuesday, April 7, 2020

Surviving BNSF Marceline Sub Searchlights Retired

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While this probably isn't breaking news I am still going to report the fact that the last two intact ATSF era signal bridges on the Marc...
Sunday, December 2, 2018

Caught on Camera: ATS Ding

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Intermittent Inductive Automatic Train Stop (ATS) was that thing that met the minimum safety requirements for high speed rail as laid down ...
2 comments:
Saturday, April 14, 2018

Denver Light Rail Signaling - Checking All the Boxes

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From time to time I have brought up some of the quirks inherent to North American light rail signaling systems.  Because they exist in a reg...
Wednesday, December 4, 2013

Non-Conditional Cab Signal Drops

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In the wake of the recent Metro-North derailment I wanted to share a few bits and pieces on non-conditional cab signal drops as a way to con...