Sports car driver grading is the FIA's system for classifying every driver into one of four tiers – Platinum, Gold, Silver, or Bronze – which then dictates who can legally be paired together in a car for Pro-Am classes like LMGT3 and GTD. 

International Motor Sports Association (IMSA) officials today announced a driver rating system, as well as pit and paddock regulations and various procedures to be implemented for the inaugural United SportsCar Racing season in 2014.Driver RatingsAll drivers participating in the 2014 series resulting from the merger between the American Le Mans...