The CMP is a way of systematically considering congestion-related issues using a set of technical tools and basing evaluations on a discrete set of locally determined performance measures. A CMP provides for the systematic review of performance of multimodal transportation systems in larger metropolitan areas and identification of strategies to address congestion through the use of "management" strategies focused on both the use and operation of facilities and services.
A CMP is required in metropolitan areas with a population greater than 200,000 or Transportation Management Areas (TMAs), as well as in urbanized areas that have requested designation as a TMA, which is the case for Permian Basin MPO. The CMP is intended to address congestion through a process that provides for effective management and operations based on cooperatively developed travel demand reduction and operational management strategies. Even if a metropolitan area is not a TMA or in nonattainment status, the CMP represents good practice in monitoring, assessing and resolving congestion issues in any MPO. The CMP establishes a rigorous method of identifying and evaluating transportation improvement strategies, including both operations and capital projects.
(From: The Transportation Planning Process Key Issues, a publication of the Transportation Planning Capacity Building Program, FHWA and FTA)