> are they really that much faster - and does it make a difference? Yes and yes > What happens if a card is wrong/doesn’t scan/is invalid/etc at the higher s

> are they really that much faster - and does it make a difference? Yes and yes > What happens if a card is wrong/doesn’t scan/is invalid/etc at the higher speed? Then the fare gates close in time to stop that person and the next 3 or so people behind them get annoyed and go around.