TfL does it by low quality, black and white, cameras that only measure if the picture looks different from an empty seat. https://tfl.gov.uk/info-for/media/pres

TfL does it by low quality, black and white, cameras that only measure if the picture looks different from an empty seat. https://tfl.gov.uk/info-for/media/press-releases/2018/june/tfl-to-trial-automatic-passenger-counting-on-buses https://tfl.gov.uk/info-for/media/press-releases/2018/june/t...