This test method provides stakeholders (runway deicing/anti-icing product manufacturers, users, regulators, and airport authorities) with relative ice undercutting capacity of runway deicing/anti-icing products, by measuring the area of ice undercut pattern as a function of time. Such runway deicing/anti-icing products are often also used on taxiways and other paved areas. This test method does not quantitatively measure the theoretical or extended time of ice undercutting capability of ready-to-use runway deicing/anti-icing products in liquid or solid form.