When snow begins to cover roads, salt crews spread salt on all main County roads, emergency routes and primary neighborhood streets. When snow accumulates to three inches, plowing and salting crews continue to clear all main County roads, emergency routes and primary neighborhood streets. Once the snow stops and arterial roads, emergency routes and primary neighborhood streets are clear, crews begin plowing neighborhood roads. Crews complete plow routes and spread abrasives on hills, at intersections and on roads around schools.