1.1 This standard applies to the test method that classifies and confirms the performance grade (PG) of asphalt for road paving and the determination of the performance grade. 1.2 This standard applies to asphalt for road paving that is graded based on performance. Applies to. The utility level is determined based on the climatic conditions of the site. That is, the decision was made based on the average highest pavement design temperature for 7 days and the lowest pavement design temperature for 1 day. The utility grade is a standard for selecting asphalt appropriate for the characteristics of the area, considering the climate and traffic conditions of the site where asphalt will be used.