ITS MPO NCHRP OMB NEPA SCAG STIP STP TCRP TEA-21 TIP TRB American Association of State Highway / U.S. government / Federal Highway Administration / Highway Trust Fund / GAO-04-744 Transportation Investment Decisions United States General Accounting Office Washington / Federal Transit Administration / office of Management and Budget / Medicare / United States Senate / Congress / Committee on Commerce / federal government / Intelligent Transportation Systems Metropolitan Planning Organization National Cooperative Highway Research Program office of Management and Budget National Environmental Policy Act Southern California Association of Governments State Transportation Improvement Program Surface Transportation / Transportation Research Board / Committee on Commerce / Science / and Transportation / American Public Transportation Association California Department of Transportation Congestion Mitigation and Air Quality Improvement Program Chicago Regional Environmental / Department of Transportation / Environmental Protection Agency / National Research Council’s Transportation Research Board / /