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Re: Speed Limits

Posted by JournalSquare-K-Car on Sun Oct 5 17:26:59 2008, in response to Speed Limits, posted by Maserati7200 on Sun Oct 5 17:15:42 2008.

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There is no speed limit, really. In fact, before the 90s, most subway trains didn't have speedometers. PATH trains still don't even have speedometers, for example.

If you have a straight track, with green signals, the train will most likely hit its top speed, about 40 MPH or so. It will slow down if there is a yellow signal ahead, however, wether due to a train ahead, or a timed signal, or a switch ahead.

Around curves, and down hills, there are timed signals, which limit how fats the train goes, because if the train runs by it, it will get "tripped" by a stop-arm, and its emergency brakes will engage.

However, on curved track with no timers, it is the motorman's responsibility to keep the train on the tracks, and there usually IS a posted "speed limit." There could also be restrictions on straight tracks if there is construction, or workers ahead, or if there is a low speed order(due to issues with track, or something).

But as for the BMT elevated, there most likely is a posted "speed limit" of 35 MPH, or so, but most motormen just keep the cntroller at max until it is time to slow down for a station, or signal.

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