The spray paver is an asphalt paving machine that combines the processes of applying tack and paving a bituminous mixture into one machine. The tack emulsion may be applied in a heavy application, sometimes referred to as a membrane, that should be more effective in “sealing” the existing surface than would normally be expected of a tack. Spray nozzles are positioned either just in front of the augurs or in multiple locations on the paver to provide full coverage for the HMA mat placed immediately following the tack application. This process eliminates tracking of the applied tack by construction or other vehicles. Spray pavers can be used with thinner bonded wearing surfaces (Item 348) or conventional HMA applications. An example of a spray paver is shown in Fig. 6-41.