| Re: MBTA Boston: Blue Line's new cars (671085) | |||
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Re: MBTA Boston: Blue Line's new cars |
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Posted by RonInBayside on Fri Aug 22 09:44:32 2008, in response to Re: MBTA Boston: Blue Line's new cars, posted by AEM-7AC #901 on Thu Aug 21 22:18:45 2008. "MBTA's Blue line uses third rail from Bowdoin to Airport where the switch over to catenary occurs for the rest of the route to Wonderland. I'm still at a loss to explain why catenary was used despite the fact that both catenary and third rail are at 600VDC."An explanation I heard (I do not remember the source) was that MBTA was concerned about salt water fouling the third rail, or about flooding potential. Since the A train crossing the water to the Rockaways also has that problem, I am skeptical of it, but that's what I heard. |