The invention concerns a belt or chain drive with at least one belt-shaped or chain-shaped drive element (1) conducted via drive or deflection disks (2, 3). For the accurate detection of the movement or for the exact transport of a component, movable entraining elements (7) are located in the belt-shaped or chain-shaped drive element (1) transverse to the movement direction of the drive element (1), between a withdrawal position and an extended entraining position, and an actuation device (11), by means of which the entraining elements (7) can be moved into the entraining position in a non-curved area of the drive element (1), is assigned to the drive element (1).