When Sandy Ogburn, Assistant to the General Manager at Triangle Transit Authority (TTA), first arrived in the North Carolina Research Triangle region from Philadelphia, she planned to stay only two years. However, because of "the slower pace of life, all the amenities in the region, and the beautiful blue color of the sky," she and her family have made the Triangle home for over 25 years. During that time, Ms. Ogburn has been an active member of the Triangle community, serving as a member of the Durham City Council, as chair of the Durham-Chapel Hill-Carrboro Metropolitan Planning Organization (DCHC MPO) Transportation Advisory Committee, and as chair of the TTA Board of Directors. Unfortunately, recent trends may threaten the high quality of life that has attracted people, like Ogburn. and businesses to the Triangle in the past. Traffic congestion and air pollution problems that have plagued other fast-growing metropolitan areas have come to the Triangle. According to the North Carolina Department of Environment and Natural Resources (NC DENR), the Research Triangle region experienced eight Code Red ("unhealthy") and twenty-three Code Orange ("unhealthy for sensitive groups") ozone days in 1999 (NC DENR 2000). Automobile emissions are a major source of this pollution, and an inefficient regional transportation system contributes to the emissions problem by exacerbating traffic congestion. Traffic volumes on Interstate 40 at the Wake-Durham county line increased from about 71,000 vehicles per day in 1990 to over 11,000 vehicles per day by 1995 (Eisenstadt and Hoar 1995). Commuters often spend an hour traversing the 10-mile stretch of Interstate 40 between Research Triangle Park and Raleigh. The region's congestion problem has increasingly drawn press coverage, with helicopter traffic reports and live views from traffic cameras broadcast each night on the local news.