|
|
| Re: DC Metro subway shutdown brings America’s aging subway systems into focus (1394520) | |||
 |
|||
| Home > SubChat | |||
|
[ Read Responses | Post a New Response | Return to the Index ] |
|
||
|
Re: DC Metro subway shutdown brings America’s aging subway systems into focus |
|
|
Posted by Jace on Wed May 4 09:24:21 2016, in response to Re: DC Metro subway shutdown brings America’s aging subway systems into focus, posted by Sand Box John on Tue May 3 23:19:19 2016. You're right on Shady Grove. To rephrase, management trusted automatic train operation far more than the operators even though trains were overshooting stations left and right while operating automatically. Compounding that was having maximum acceleration and braking rates as the default reset after overshoots (no one questioned that either).The basic problem with the Fort Totten wreck was that the train control system was reporting more than 9,000 false track occupancies per week and no one in the control center questioned it. Alarms were screaming, lights were flashing and no one had enough trust in themselves to think that something bad might happen when your most basic and critical safety system can't reliably tell you whether or not tracks are occupied 100% of the time. Shoddy maintenance led to this but why maintain something that you believe is perfect to begin with? This wreck illustrated to me how phenomenally bad their operations had become. I still can't understand how they functioned. |
|
(There are no responses to this message.)
|
|