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> travel times in cabs are hellish comparing to subway commute

Isn't this because of road congestion though? I thought the principle behind the study was to remove all cars except those 3,000 ride sharing vehicles.

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I think it has more to do with how close the intersections are. Even in no traffic, you have to stop at a light every minute or so.

NYC's lights can be timed pretty well when there's no traffic.

https://www.youtube.com/watch?v=FY37qT2G-cU

Yes, it is one of the factors but not the only one. Others being people commuting in their own cars (yes we have stubborn folks who refuse to take trains), pedestrian traffic (primarily composed of tourists and selfie enthusiasts), never ending construction and repairs in Manhattan, Food carts maneuvering etc. to name a few.

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