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https://en.m.wikipedia.org/wiki/New_York_City_Subway_rolling... says they have about 6,500 cars. The number of cabs is more difficult to find. Given the common rule for newer ones

“Cars ending in 1, 5, 6 and 0 have single full-width cabs and are known as "A" cars.

Cars ending in all other digits have no cabs and are known as "B" cars”

, I guess it is about 40% of that, or 2,600.

So, about 2,600 cameras (motion detectors might already be enough, if the culprit spends sufficient time in the cabin) in the cabs likely would solve the “what do they look like?) problem. Because of the differences in car widths, you even likely need fewer to cover the lines where this occurs a lot.




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