Tailgate Aggregate Spreader
The tailgate of a haul truck is sometimes used as an aggregate spreader by state maintenance forces in spot sealing. Some TxDOT districts have installed air-operated tailgate spreaders. Figures 7‑34 through 7-37 show how modifications can be made to the typical truck so that an employee is no longer needed to ride on the tailgate spreader. This will reduce the number of employees needed in the crew and improve safety in the operation.

Figure 7-34. Air Line Connections on Back of Truck Cab

Figure 7-35. Control Valve in Truck Cab.

Figure 7-36. Mirror to View Rock in Truck and Rock Flow

Figure 7-37. Air Cylinder to Open/Close Spreader