In addition to mandated products (LRTP, TIP, CMP), the HRTPO staff conducts studies and prepares reports for various transportation issues in order to improve safety and mobility, and relieve congestion in the region. Several corridor and local planning studies are completed each year as part of the HRTPO Unified Planning Work Program (UPWP). These studies are typically requested by local municipal governments, the HRTPO Board, or the general public and are often considered critical transportation topics. Most studies contain data, analysis, and a set of recommendations that support the goals and objectives established within the Congestion Management Process (CMP) and the Long Range Transportation Plan (LRTP). Many of these studies support one or more of the eight federal planning factors, which are required by Metropolitan Planning Organizations (MPOs) as part of the Transportation Equity Act for the 21st Century (TEA-21). All studies are coordinated with the Virginia Department of Transportation (VDOT), local municipalities, and other stakeholders and are made available for public review and input.