A sweeper vehicle for moving in a direction of travel to remove debris from a roadway surface being swept, comprising: at least a first and a second side-broom (22, 24) mounted to the vehicle, each side-broom (22, 24) movable between a retracted position and an extended position, each of the side-brooms (22, 24) having a motor for rotating its respective side-broom (22, 24) in a direction of rotation to sweep at least a portion of the debris on the surface being swept into an area between the first and second side-brooms (22, 24); a first suction-inlet at or adjacent a first side of the vehicle and a second suction-inlet at or adjacent a second side of the vehicle, each suction-inlet (32, 34) connected through a respective air-flow valve to a debris hopper, each air-flow valve operable between a substantially open position and a substantially closed position; a fan for creating an air flow through the debris hopper and at least one of the suction-inlets (32, 34) when the valve associated with the at least one suction-inlet (32, 34) is in its substantially open position; a primary material-transfer broom having a respective motor for rotating the primary material-transfer broom about an axis of rotation; a first secondary material-transfer broom having a respective motor for rotating the first secondary material-transfer broom about an axis of rotation in a first direction of rotation for transferring at least a portion of the debris in a direction for pickup by the first suction-inlet as the sweeper vehicle moves in the direction of travel; a second secondary material-transfer broom having a respective motor for rotating the second secondary material-transfer broom about an axis of rotation in a second direction of rotation for transferring at least a portion of the debris in a direction for pickup by the second suction-inlet as the sweeper vehicle moves in the direction of travel; the primary material-transfer broom rotatable in a selected one of a first direction of rotation to transfer at least a portion of the debris to the first secondary material-transfer broom and a second direction of rotation to transfer at least a portion of the debris to the second secondary material-transfer broom. at least a first and a second side-broom (22, 24) mounted to the vehicle, each side-broom (22, 24) movable between a retracted position and an extended position, each of the side-brooms (22, 24) having a motor for rotating its respective side-broom (22, 24) in a direction of rotation to sweep at least a portion of the debris on the surface being swept into an area between the first and second side-brooms (22, 24); a first suction-inlet at or adjacent a first side of the vehicle and a second suction-inlet at or adjacent a second side of the vehicle, each suction-inlet (32, 34) connected through a respective air-flow valve to a debris hopper, each air-flow valve operable between a substantially open position and a substantially closed position; a fan for creating an air flow through the debris hopper and at least one of the suction-inlets (32, 34) when the valve associated with the at least one suction-inlet (32, 34) is in its substantially open position; a primary material-transfer broom having a respective motor for rotating the primary material-transfer broom about an axis of rotation; a first secondary material-transfer broom having a respective motor for rotating the first secondary material-transfer broom about an axis of rotation in a first direction of rotation for transferring at least a portion of the debris in a direction for pickup by the first suction-inlet as the sweeper vehicle moves in the direction of travel; a second secondary material-transfer broom having a respective motor for rotating the second secondary material-transfer broom about an axis of rotation in a second direction of rotation for transferring at least a portion of the debris in a direction for pickup by the second suction-inlet as the sweeper vehicle moves in the direction of travel; the primary material-transfer broom rotatable in a selected one of a first direction of rotation to transfer at least a portion of the debris to the first secondary material-transfer broom and a second direction of rotation to transfer at least a portion of the debris to the second secondary material-transfer broom.