Re: Update on WMATA almost accident from a while back (1403679) | |||
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Re: Update on WMATA almost accident from a while back |
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Posted by WillD on Thu Jul 28 21:45:07 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. WMATA is running with Automatic Train Control. ATC is composed of Automatic Train Operation, Automatic Train Protection, and Automatic Train Supervision subsystems. The ATO system is the subsystem currently not being used, but all other aspects of the ATC system are fully in operation.ATP does enforce wayside signals for most cases. It uses the cab signal system to maintain train separation and enforce speed limits. But I believe WMATA's cab signal system does not force the vehicle to remain standing with a command speed of zero. Instead, after bringing the train to a stop the system allows the T/O to continue at a restricted speed. It is up to the T/O to continue on sight not exceeding some speed and avoid contact with rail defects, other trains, and stopping short of wayside signals at stop. |
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