Every four years in areas that are not in attainment under the Clean Air Act, and every five years years in areas of attainment, MPOs prepare a Regional Transportation Plan that serves as a blueprint for future investments in transportation in their region.
2008 | 2008 Summer Olympics | Act of Parliament | Act | Rural communities of Senegal | Statute Law Revision Act 1948 | 2008 in music | Statute Law Revision Act 1888 | Köppen climate classification | United States presidential election, 2008 | United States Environmental Protection Agency | climate change | Act of Congress | Arena Football League (1987–2008) | UEFA Euro 2008 | Reform Act 1832 | Patient Protection and Affordable Care Act | Eurovision Song Contest 2008 | Endangered Species Act | Digital Millennium Copyright Act | Clean Water Act | American Recovery and Reinvestment Act of 2009 | National School Lunch Act | 2008 Sichuan earthquake | Statute Law Revision Act 1863 | Criminal Justice Act 1988 | Local Government Act 1972 | Intergovernmental Panel on Climate Change | Barack Obama presidential campaign, 2008 | Americans with Disabilities Act of 1990 |