The Philadelphia region, as a whole, also has a comprehensive plan, as do many of the 62 municipalities in Montgomery County. So, with all these comprehensive plans, what is the role of the county plan? The county plan provides an overall framework for local municipal plans and provides guidance on issues that transcend local boundaries, such as highways, public transportation, flooding, trails, growth trends, redevelopment trends, shopping needs, impact of large developments, overall housing needs, natural systems, and economic growth.