Salt trucks are specialized vehicles used to spread salt on roads during winter weather. They help prevent ice from forming and improve traction for vehicles. The salt lowers the freezing point of water, making it easier to clear snow and ice. These trucks are often equipped with large hoppers that hold the salt and a spreading mechanism to distribute it evenly. Local governments typically operate salt trucks to ensure safe driving conditions during snowstorms. Proper use of salt can reduce accidents and keep roads accessible for emergency services and commuters.