Specifications include, but are not limited to: MnDOT requests responses for a Clear Roads project to compare the effectiveness and efficiency of multiple types of spreader equipment used to distribute prewet salt to winter roadways. Traditional chain conveyor spreaders typically move dry salt to the spreader’s rear gate, where the salt is dropped into a hopper or chute and then falls onto a spinner for distribution. By contrast, auger-driven spreaders move granular salt from the hopper box to the discharge chute through corkscrew action. Either of these spreader types can be configured with tanks, hoses and nozzles at multiple locations along the salt’s path through the spreader to allow the salt to be prewet with salt brine or another solution before it is distributed to the roadway.