Self-propelled sweeping machine

A self-propelled sweeping machine (1) for intake of debris (K) from a traffic surface (V), especially a street-sweeping machine (1′), comprising a debris-intake device (4) and a debris-collecting hopper (5) having a wall (12) and a filled-level sensor (16) wherein the debris-intake device (4) comprises an intake head (8) and a conveyor section (9) attached thereto with an ejection and distribution device (11) opening into an inner space (7) of the debris-collecting hopper (5), by means of which the debris (K) taken in by the debris-intake device (4) from the traffic surface (V) can be distributed in the inner space (7) of the debris-collecting hopper (5) with formation of a debris surface (KO), characterized by the design of the filled-level sensor (16) as a radar sensor (16′) scanning the inner space (7) of the debris-collecting hopper (5) in the region of a scan cone (17) as well as by an evaluation unit (22) cooperating with the radar sensor (16′), wherein, via a distance between the filled-level sensor (16) and the debris surface (KO) in the scan cone (17), measured contactlessly by the filled-level sensor (16), the degree of filling of the debris-collecting hopper (5) with debris (K) can be determined in the evaluation unit (22) and output by it to a display and/or signaling unit (23), wherein further the debris-collecting hopper (5) has a leaf screen (13) that is impassable for coarse debris (K) and that subdivides the inner space (7) of the debris-collecting hopper (5) into a debris region (7a) and an exhaust-air region (7b), wherein the filled-level sensor (16) is provided in the exhaust-air region (7b) and the debris region (7a) of the inner space (7) of the debris-collecting hopper (5) is scanned in the region of the scan cone (17) through the leaf screen (13).