What is "erating"

eRating is a certification, education, and labeling program for the passenger transportation sector developed by the Certification for Sustainable Transport (CST) at the University of Vermont. The eRating certification system is used by the Certification for Sustainable Transportation to rate vehicles based on criteria such as greenhouse gas emissions per passenger mile, emissions, alternative fuels, purchase of carbon offsets, and any training programs that the driver has undergone that may help with energy efficient driving. If enough standards are met, the vehicle is given an eRating certification.