Diamond grinding is a concrete pavement restoration technique that corrects irregularities caused by construction curling, slab warping, faulting, and roughness and restores rideabliity.  Partial-depth repair may be used to repair spalled areas at joints and cracks.  The most immediate effect of diamond grinding is a significant improvement in the riding smoothness of a pavement. Another very important effect of diamond grinding can be the significant increase in surface macro-texture and consequent noise reduction and safety improvement. Safety can be improved by a temporary increase in skid friction resistance and a reduction in the potential for hydroplaning.