Transportation affects everyone and thus a safe, accessible, affordable and reliable transportation system is vital to all users. Every urbanized area with a population of more than 50,000 must have a designated Metropolitan Planning Organization for transportation to qualify for federal highway or transit assistance. MPOs play a vital role in planning the local and regional transportation systems, conducting public outreach, preparing short- and long-term transportation plans, and helping to prioritize the spending of federal dollars. MPOs ensure that highway and transit projects which use federal funds are products of a credible planning process and meet local priorities. Since MPOs are made up of those agencies responsible for carrying out transportation programs in the region, the process (conducted in a cooperative, comprehensive and continuous manner) puts all agencies into a partnership with one another to carry out the programs.