The GM has made an good decision, to complete shutdown.
The question remains for how long?
The question remains for how long?
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SRich wrote:The GM has made an good decision, to complete shutdown.Metro is reopening Thursday, 5 AM.
The question remains for how long?
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JDC wrote:WP story on the issues located during the shutdown, as well as the fact that USDOT is about to commence an inspections blitz of Metro, looking into red light running, misuse of handbrakes, and other issues. https://www.washingtonpost.com/local/tr ... story.htmlRed light running? I thought the Metro was automated?
MBTA3247 wrote: Red light running? I thought the Metro was automated?WMATA has problems with rail operators disregarding red signals and proceeding anyhow. In some cases, this has tripped a derailer, in others not; but it all cases this is regarded as a major safety incident. The repetitive of this has shaped other safety decisions over time.
JDC wrote:Metro posted a map, though sadly without a legend!, of where it has found issues with the cables. https://twitter.com/wmata/status/710238517180416000Metro re-posted this map on its website with a press release and an explanation. http://www.wmata.com/about_metro/news/P ... aseID=6083
JDC wrote:I wonder what precedent this will set in terms of Metro tackling other system-wide issues during an entire system, or line, shutdown. For example, closing the entire Red Line for 24 hours over the weekend in order to clean the third rail, or insulators. Similarly, close the entire Yellow/Blue line in VA to clean right of way, etc. If the DC region can handle this with a few hours notice AND during a weekday, I can see this being something we could handle on a weekend during non-tourist season with lots of advance notice.JDC, MCL and Everyone:
farecard wrote:Wait- what? How does the DC Metro not have automatic train stop devices at signals? "Trippers" have been standard on the NYC Subway since at least the 1940's. When a signal sets to "stop" a metal arm is raised from between or beside the rails; the rod will hit the "trip cock" that's mounted on each truck, which in turn shuts off the traction power and dumps the air.MBTA3247 wrote: Red light running? I thought the Metro was automated?WMATA has problems with rail operators disregarding red signals and proceeding anyhow. In some cases, this has tripped a derailer, in others not; but it all cases this is regarded as a major safety incident. The repetitive of this has shaped other safety decisions over time.
Ridgefielder wrote:Wait- what? How does the DC Metro not have automatic train stop devices at signals? "Trippers" have been standard on the NYC Subway since at least the 1940's. When a signal sets to "stop" a metal arm is raised from between or beside the rails; the rod will hit the "trip cock" that's mounted on each truck, which in turn shuts off the traction power and dumps the air.They don't need them. It's automated as part of ATP. The train will stop itself when it encounters a zero speed command from ATC, which is also what a red signal would give it. The train will stop. You can't just chug along past a stop signal. Once the train is stopped, it can proceed again, limited automatically to 15mph, with permission from OCC. These signal violations seem to be mostly in yards, or misunderstanding legitimate orders to proceed past a stop signal.