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| Re: Question about signal lights on the 7 and trip arms (1510119) | |||
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Re: Question about signal lights on the 7 and trip arms |
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Posted by MorningsideHeightsM100 on Tue Apr 16 06:46:22 2019, in response to Re: Question about signal lights on the 7 and trip arms, posted by Andrew Saucci on Mon Apr 15 17:11:11 2019. or ATO...automatic train operation.Ala WMATA/DC Metro was designed to be. |
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