AASHTO R 77-16 (2020) specifies requirements and procedures for a certification system applicable to all suppliers of emulsified asphalt. The requirements and procedures apply to materials that meet the requirements of M 140, M 208, or M 316, (Cationic Emulsions/Polymer-Modified Cationic Emulsions), which are manufactured at refineries, terminals, in-line blended, or otherwise produced for use in paving applications. This standard was formerly designated as provisional standard PP 71.