Anti-icing liquids are specially formulated substances used to prevent the formation of ice on surfaces, particularly on roads and runways. These liquids work by lowering the freezing point of water, which helps to keep surfaces clear during cold weather. Commonly used in winter maintenance, they can be applied before or during snowfall to enhance safety and improve driving conditions. Typically made from materials like calcium chloride or potassium acetate, anti-icing liquids are often sprayed onto surfaces to create a protective barrier. This proactive approach is more effective than traditional de-icing methods, which are applied after ice has already formed, making it a preferred choice for many municipalities and airports.