Automated parking system comprising at least one parking deck for a multiplicity of vehicles to be parked next to and/or behind one another, wherein the vehicles stand in each case on pallets which are displaceable in longitudinal and/or transverse direction, wherein the parking deck has a multiplicity of permanently installed transport modules (1, 2) which are arranged next to and/or behind one another, that these transport modules bracket 1, 2) have several outwardly protruding conveying elements (4, 4a) having horizontal transport direction, which, at least insofar as they follow one another in the desired transport direction of a pallet can be driven synchronously and serve for the displaceable support of in each case one pallet and for its transfer onto an adjacent transport model (1, 2), and wherein the conveying elements (4, 4a) are in the case of at least some transport modules pivotable about a vertical axis for changing the transport direction and wherein the guidance of the pallets for the transport modules (1, 2) is carried out by guiding bars (5a, 34) arranged in longitudinal and/or transport direction and by guiding rollers (4, 35) corresponding therewith, wherein the guiding bars are arranged at the transport modules (1, 2) and wherein the guiding rollers are arranged at the pallets, characterised in that the conveying elements (4, 4a) are in the form of rollers (4, 4a) carrying the pallets having a preferred horizontal rotational axis, that the rollers (4, 4a) in the case of at least some transport modules are pivotable about a vertical axis when loaded with a pallet carrying a vehicle and that in each case two pairs of rollers are arranged in longitudinal direction and in transverse direction of the transport modules in each transport module (1, 2). the parking deck has a multiplicity of permanently installed transport modules (1, 2) which are arranged next to and/or behind one another, that these transport modules bracket 1, 2) have several outwardly protruding conveying elements (4, 4a) having horizontal transport direction, which, at least insofar as they follow one another in the desired transport direction of a pallet can be driven synchronously and serve for the displaceable support of in each case one pallet and for its transfer onto an adjacent transport model (1, 2), and wherein the conveying elements (4, 4a) are in the case of at least some transport modules pivotable about a vertical axis for changing the transport direction and wherein the guidance of the pallets for the transport modules (1, 2) is carried out by guiding bars (5a, 34) arranged in longitudinal and/or transport direction and by guiding rollers (4, 35) corresponding therewith, wherein the guiding bars are arranged at the transport modules (1, 2) and wherein the guiding rollers are arranged at the pallets, characterised in that the conveying elements (4, 4a) are in the form of rollers (4, 4a) carrying the pallets having a preferred horizontal rotational axis, that the rollers (4, 4a) in the case of at least some transport modules are pivotable about a vertical axis when loaded with a pallet carrying a vehicle and that in each case two pairs of rollers are arranged in longitudinal direction and in transverse direction of the transport modules in each transport module (1, 2).