This standard describes a laboratory test method for simulating the sedimentation of road marking paints under normal storage conditions. Stability of coatings over long storage periods can be assessed by testing the sedimentation performance of coatings under specified temperature cycles. The test involves freezing-thawing the coatings repeatedly under specific conditions and assessing the sedimentation degree. This method helps to detect whether the coatings will over-settle during storage, thus affecting their application performance and mass.