A dump-truck fluid assistance system and method for prevention and remediation of material sticking to the truck bed and dampening generation of dust, at different stages of loading, transport, and dumping operations. Fluid is emitted from one or more outflow manifolds inside the bed of the dump truck for one or more purposes of lubricating the truck bed, regulating the temperature of the truck bed, physically flushing material from the truck bed, and dampening generation of airborne particles or dust. Under the control of a controller having a controller transceiver, directed via a cab operator transceiver or remote operator transceiver, a fluid pump sends fluid from a fluid reservoir via a fluid line into the outflow manifolds that emit the flow of fluid variously as spray, stream, jet, drip, or weep, into the bed of the dump truck.