High performance self-propelled combined shot-peening machine for the treatment of the coating surfaces of bituminous conglomerate, asphalt, concrete or metal, including a shot-peening unit, a suction, filtering, separation and storage unit, coupled together, - the shot-peening unit consisting of feeding means (2, 2') of the fresh external air, of means throwing the microspheres (1, 1'), of sequence of ducts for the transit of said microspheres together with the collected impurities and the residual materials of the working process, and means for separation, collection and recycle (5, 8, 9); - the suction and filtering unit consisting of an aspirator or fan, a container of separation and collection of the material of the working cycle, dusts, filler and others, an auxiliary power generator for the autonomous motion distribution to the machine through a hydrostatic transmission and for the generation of the hydraulic and electric power needed by all the units and utilities enslaved to the machine, - wherein - the high performance self-propelled combined shot-peening machine comprises: - a scarifying unit; - the shot-peening unit is provided with a further intercooler sieve for the cooling of the microspheres and their final decontamination from the bituminous residual adherent to them; - a roller scarifying unit arranged on the front part of the self-propelled vehicle, to preliminarily remove the road markings before the subsequent shot-peening process; - a self-propelled mechanic-magnetic unit collecting metallic materials, mainly on roads coating and runways, composed of an autonomous self-propelled vehicle, trailer or semi-trailer, provided with: - brushes in the front part to free and move the grit attached and entangled to the modified bitumens that are tempered during the shot-peening treatment; - dry suction and filtering means to avoid producing powders during the brushing; - a fully automated rear magnetic group for the continuous capture of the ferrous materials, with adjustable rotation and ground clearance automatically controlled according to the settings to control the removal of said materials; - a collection basin of the lost recovered grit; - suction and conveyance ducts for scrap materials, debris and contaminating residual products of the grit to the discharge container; - washing and storage means. - the shot-peening unit consisting of feeding means (2, 2') of the fresh external air, of means throwing the microspheres (1, 1'), of sequence of ducts for the transit of said microspheres together with the collected impurities and the residual materials of the working process, and means for separation, collection and recycle (5, 8, 9); - the suction and filtering unit consisting of an aspirator or fan, a container of separation and collection of the material of the working cycle, dusts, filler and others, an auxiliary power generator for the autonomous motion distribution to the machine through a hydrostatic transmission and for the generation of the hydraulic and electric power needed by all the units and utilities enslaved to the machine, - wherein - the high performance self-propelled combined shot-peening machine comprises: - a scarifying unit; - the shot-peening unit is provided with a further intercooler sieve for the cooling of the microspheres and their final decontamination from the bituminous residual adherent to them; - a roller scarifying unit arranged on the front part of the self-propelled vehicle, to preliminarily remove the road markings before the subsequent shot-peening process; - a self-propelled mechanic-magnetic unit collecting metallic materials, mainly on roads coating and runways, composed of an autonomous self-propelled vehicle, trailer or semi-trailer, provided with: - brushes in the front part to free and move the grit attached and entangled to the modified bitumens that are tempered during the shot-peening treatment; - dry suction and filtering means to avoid producing powders during the brushing; - a fully automated rear magnetic group for the continuous capture of the ferrous materials, with adjustable rotation and ground clearance automatically controlled according to the settings to control the removal of said materials; - a collection basin of the lost recovered grit; - suction and conveyance ducts for scrap materials, debris and contaminating residual products of the grit to the discharge container; - washing and storage means. - a scarifying unit; - the shot-peening unit is provided with a further intercooler sieve for the cooling of the microspheres and their final decontamination from the bituminous residual adherent to them; - a roller scarifying unit arranged on the front part of the self-propelled vehicle, to preliminarily remove the road markings before the subsequent shot-peening process; - a self-propelled mechanic-magnetic unit collecting metallic materials, mainly on roads coating and runways, composed of an autonomous self-propelled vehicle, trailer or semi-trailer, provided with: - brushes in the front part to free and move the grit attached and entangled to the modified bitumens that are tempered during the shot-peening treatment; - dry suction and filtering means to avoid producing powders during the brushing; - a fully automated rear magnetic group for the continuous capture of the ferrous materials, with adjustable rotation and ground clearance automatically controlled according to the settings to control the removal of said materials; - a collection basin of the lost recovered grit; - suction and conveyance ducts for scrap materials, debris and contaminating residual products of the grit to the discharge container; - washing and storage means.