A system for cleaning conveyor human transports including a first plurality of elongate brushes, each extending along a longitudinal axis, at least one drive motor, a second plurality of endless resilient tensionable belts arranged to be driven by the drive motor intermittently in a plurality of planes, generally perpendicular to the longitudinal axes of the first plurality of elongate brushes, a third plurality of brush mounting elements arranged to mount each of the first plurality of elongate brushes onto the second plurality of endless resilient tensionable belts for intermittent motion generally perpendicular to the longitudinal axes of the first plurality of elongate brushes and a tensioning assembly operative to maintain the second plurality of endless resilient tensionable belts under tension at least during the motion.