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| Re: Update on WMATA almost accident from a while back (1403706) | |||
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Re: Update on WMATA almost accident from a while back |
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Posted by Sand Box John on Fri Jul 29 01:15:00 2016, in response to Re: Update on WMATA almost accident from a while back, posted by zuckie13 on Thu Jul 28 17:05:38 2016. Ok, I'm confused maybe. I get we havn't had Metro running with ATC, but why isn't the system using the on board cab signals to at least enforce these stop signals?Cab signal will stop a train in manual mode. The thing is an operator can still proceed after being stopped by the lack of a speed command at a speed no greater the 15 MPH. There is no such thing as a zero speed command, the lack of the presents of speed command is interpreted as a zero speed command by onboard hardware. There also in no stop and stay command. The reason why this functionality exists is because virtually all of the non revenue track on the railroad in not configured to transmit speed commands to the trains. Operating at no greater then 15 MPH with ATP enabled allows trains to operate on track not configured to transmit speed commands. John in the sand box of Maryland's eastern shore. |
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