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On metro systems (especially older ones) there are often tight constraints on train length, so that they can fit between sets of signals or points without fouli
by Reason077 8y ago
On metro systems (especially older ones) there are often tight constraints on train length, so that they can fit between sets of signals or points without fouling them, for example.
Pointy aerodynamic noses increase train length without increasing passenger capacity. Generally you want to maximise capacity while staying within the maximum allowed train length.