Abstract: A spray controlling system is provided for vehicles that includes, for a wheel-set, a splash guard and a side shield positioned at the rear and side of a wheel set, respectively. The guard comprises a panel having a plurality of rows of conical projections and a plurality of upstanding ribs formed on a wheel-facing surface thereof in a spaced parallel relationship. Both projections and ribs are disposed in an inverted-V configuration oriented on a vertical centerline of the panel with six rows of projections interposed between adjacent ribs. The projections are disposed closely adjacent in the rows to form water flow channels between rows and ribs with the ribs being about twice the height of the projections.