When entering Lockney, Texas On highway 70 when going toward city of Floydada Texas the speed limit changes to 60 miles an hour from 75 miles an hour. You may not see the speed sign it comes up pretty quickly. There is really no reason for speed change, the highway goes past the city of Lockney. When driving pass the cotton gin toward the water tower there is usually is police or Floyd county sheriff on one side of the road usually on the north side of the road.