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few high service secondary routes. Roads assigned this priority receive first consideration during snowstorms. These roads are kept free of snow and ice so that traffic can proceed in safety without the use of chains, except during periods of heavy falling snow or drifting.
Should extremely low temperatures prevent or greatly retard the action of chemicals, these routes will be “so covered with abrasives that traffic can proceed in safety without the use of chains.”
Priority Two — This includes medium service primary routes and some high service secondary routes. Routes with this priority will be cleared of snow and ice, or covered with abrasives, to permit travel as soon as possible during a storm, but within
95.9%