News Source: 
UW News
January 14, 2010

Road construction is a more-than-$80 billion annual industry in the United States. Yet nothing comparable to the LEED rating system for buildings, or the Energy Star system for appliances, exists for highways and roads.
University of Washington researchers and global engineering firm CH2M Hill today unveiled Greenroads, a rating system for sustainable road design and construction. Environmental, economic and social impacts are included. The system outlines minimum requirements to qualify as a green roadway, including a noise mitigation plan, storm-water management plan and waste management plan. It also allows up to 118 points for voluntary actions such as minimizing light pollution, using recycled materials, incorporating quiet pavement and accommodating non-motorized transportation.