Under the California State Legislature to implement Proposition 111 (also known as the Traffic Congestion Relief and Spending Limitation Act of 1990), each county with 50,000 or more residents – in other words, any county required to have a metropolitan planning organization under federal law – must also designate a local government agency to develop a congestion management program (CMP) or forfeit its share of state gasoline tax revenues. In 1996, Assembly Bill 2419 allowed counties to opt out of the CMP requirement by implementing an alternative mechanism for congestion management,[1][2] and made the CMP voluntary for counties with fewer than 200,000 residents.[3]San Diego County at one point opted out of the CMP in favor of a regional fee applied to new developments.[1]
List of congestion management agencies
Each county designates a local government agency as its CMA. The designated agencies are a variety of public transportation districts, joint powers authorities, and councils of governments.
^ ab"Commonly Used Acronyms and Terms"(PDF). San Luis Obispo Council of Governments, San Luis Obispo Regional Transit Authority. August 2010. p. 4. Retrieved June 8, 2021.