The term Salt Belt refers to states, in the United States, in which large quantities of salt are applied to roads during the winter season to control snow and ice. States in the salt belt include Alaska, Connecticut, Delaware, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, South Dakota, Vermont, Virginia, West Virginia, Wisconsin, and Washington DC. Other states such as Colorado and Utah are also considered part of the Salt Belt but use less corrosive substances.
Road salt is a common cause for corrosion of automobile parts, and cars in the salt belt often experience more rapid rusting than in other parts of the country rendering them unsafe as brake lines and electrical wiring are adversely affected. Manufacturer recalls for corrosion issues often target only vehicles operated within salt belt states.