So in other words, the M14 SBS will be just as slow as the M14A/D, just with off-board fare payment.
And maybe signal prioritization. But blue lights and fancy vinyls though. Thanks Andy C!!!
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Since M14A/D basically run the same route except at the east end, if dropping stops on 14th St isn't going to happen, alternation should be the method: ie the A stops at 5th Av, the D at 6th, A at 7th, D at 8th and so on. Might speed up the line.