An O.D.O.T. sand truck treats the road surface at the corner of U.S. 81 and 412 Saturday, Feb. 28, 2015. Driving conditions remain hazardous as additional snow and sleet are expected across Oklahoma Sunday. (Staff Photo by BONNIE VCULEK)

O.D.O.T.Sand TruckU.S. 81412Hazardous TravelSnowSleetWeatherOklahomaBonnie VculekEnid