What is this Superpave I keep hearing about?

Superpave is a system of material specifications and laboratory mix design methods based on performance criteria developed under the Strategic Highway Research Program (SHRP). Using the Superpave system, materials and mixes can be designed to reliably perform under any conditions of load and environment. The Superpave system is undergoing continuing development nationally. The Ohio DoT adopted Superpave for its heavy traffic applications as Item 442 of its 2002 CMS.