Transportation Improvement Program Revision Process, National Cooperative Highway Research Program (NCHRP) Synthesis 419. Synthesis of Highway Practice

摘要

To maintain their eligibility for federal funding, metropolitan planning Organizations (MPOs) are required to adopt and regularly update a Transportation Improvement Program (TIP), identifying a prioritized listing Projects covering a period of four years that is developed and formally Adopted by an MPO as part of the metropolitan transportation planning process (Title 23 U.S.C. Part 450.104). The TIP also has a formal revision process that occurs as either an administrative modification or an amendment. TIP Administrative modifications are minor revisions that may include changes to phase costs, sources of funding, and initiation dates. The more substantive TIP amendments may include changes to the project scope, significant costs, completion date, particularly if the project in question is not exempt from air quality conformity requirements in a nonattainment or maintenance area.