A level three snow emergency is when all roads are closed to the public, and only emergency personnel may enter. People who drive on the roads may be arrested unless there is an emergency.
A county sheriff may issue a snow emergency and close the road if it is deemed necessary. A level one snow emergency is when roads are dangerous with blowing snow and may be icy; at this time the public is advised to drive carefully.
A level two snow emergency is when roads are dangerous with blowing snow and may be very icy. The public should avoid the road, and only travel if it is an emergency.