In the

U.S. state In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its sover ...

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

, a congestion management agency (abbreviated CMA) is a

county A county is a geographic region of a country used for administrative or other purposesChambers Dictionary, L. Brookes (ed.), 2005, Chambers Harrap Publishers Ltd, Edinburgh in certain modern nations. The term is derived from the Old French ...

-level government agency responsible for a comprehensive

transportation improvement program A transportation improvement program (TIP) is a United States federally mandated requirement ( (j)) for all metropolitan planning organizations (MPOs). The TIP, also known as a short-range plan, lists all transportation projects in an MPO's metropo ...

that reduces

traffic congestion Traffic congestion is a condition in transport that is characterized by slower speeds, longer trip times, and increased vehicular queueing. Traffic congestion on urban road networks has increased substantially since the 1950s. When traffic de ...

and reduces transportation-related air pollution through local

land-use planning Land use planning is the process of regulating the use of land by a central authority. Usually, this is done to promote more desirable social and environmental outcomes as well as a more efficient use of resources. More specifically, the goals ...

. Under the

California State Legislature The California State Legislature is a bicameral state legislature consisting of a lower house, the California State Assembly, with 80 members; and an upper house, the California State Senate, with 40 members. Both houses of the Legisla ...

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 A metropolitan planning organization (MPO) is a federally mandated and federally funded transportation policy-making organization in the United States that is made up of representatives from local government and governmental transportation authorit ...

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 A fuel tax (also known as a petrol, gasoline or gas tax, or as a fuel duty) is an excise tax imposed on the sale of fuel. In most countries the fuel tax is imposed on fuels which are intended for transportation. Fuels used to power agricultural ...

revenues. In 1996, Assembly Bill 2419 allowed counties to opt out of the CMP requirement by implementing an alternative mechanism for congestion management and made the CMP voluntary for counties with fewer than 200,000 residents.

San Diego County San Diego County (), officially the County of San Diego, is a county in the southwestern corner of the U.S. state of California. As of the 2020 census, the population was 3,298,634, making it California's second-most populous county and the fi ...

at one point opted out of the CMP in favor of a regional fee applied to new developments.

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 Councils of governments (CoGs—also known as regional councils, regional commissions, regional planning commissions, and planning districts) are regional governing and/or coordinating bodies that exist throughout the United States. CoGs are norma ...

. *

Alameda County Alameda County ( ) is a List of counties in California, county located in the U.S. state of California. As of the 2020 United States Census, 2020 census, the population was 1,682,353, making it the 7th-most populous county in the state and List ...

: Alameda County Transportation Commission *

Contra Costa County ) of the San Francisco Bay , subdivision_type = Country , subdivision_name = United States , subdivision_type1 = State , subdivision_name1 = California , subdivision_type2 ...

Contra Costa Transportation Authority Contra may refer to: Places * Contra, Virginia * Contra Costa Canal, an aqueduct in the U.S. state of California * Contra Costa County, California * Tenero-Contra, a municipality in the district of Locarno in the canton of Ticino in Switzerland ...

Fresno County Fresno County (), officially the County of Fresno, is a county located in the central portion of the U.S. state of California. As of the 2020 Census, the population was 1,008,654. The county seat is Fresno, the fifth-most populous city in Cali ...

: Fresno Council of Governments *

Imperial County Imperial Count (german: Reichsgraf) was a title in the Holy Roman Empire. In the medieval era, it was used exclusively to designate the holder of an imperial county, that is, a fief held directly ( immediately) from the emperor, rather than from ...

: *

Kern County Kern County is a county located in the U.S. state of California. As of the 2020 census, the population was 909,235. Its county seat is Bakersfield. Kern County comprises the Bakersfield, California, Metropolitan statistical area. The county sp ...

Kern Council of Governments KERN (1180 AM) is a commercial radio station licensed to Wasco-Greenacres, California, and serving the Bakersfield metropolitan area. The station is owned by American General Media. The radio studios and offices are in the American General Medi ...

Kings County Kings County or King's County may refer to: Places Canada *Kings County, New Brunswick *Kings County, Nova Scotia *Kings County, Prince Edward Island ** King's County (electoral district), abolished in 1892 Ireland * County Offaly, formerly call ...

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Los Angeles County Los Angeles County, officially the County of Los Angeles, and sometimes abbreviated as L.A. County, is the most populous county in the United States and in the U.S. state of California, with 9,861,224 residents estimated as of 2022. It is the ...

Los Angeles County Metropolitan Transportation Authority The Los Angeles County Metropolitan Transportation Authority (LACMTA), commonly branded as Metro, LA Metro, and L.A. Metro, is the state agency that plans, operates, and coordinates funding for most of the transportation system in Los Angele ...

Madera County Madera County (), officially the County of Madera, is a county at the geographic center of the U.S. state of California. As of the 2020 census, the population was 156,255. The county seat is Madera. Madera County comprises the Madera, CA Metr ...

: *

Marin County Marin County is a county located in the northwestern part of the San Francisco Bay Area of the U.S. state of California. As of the 2020 census, the population was 262,231. Its county seat and largest city is San Rafael. Marin County is acros ...

Transportation Authority of Marin Marin County is a county located in the northwestern part of the San Francisco Bay Area of the U.S. state of California. As of the 2020 census, the population was 262,231. Its county seat and largest city is San Rafael. Marin County is acros ...

Merced County Merced County ( ), is a county located in the northern San Joaquin Valley section of the Central Valley, in the U.S. state of California. As of the 2020 census, the population was 281,202. The county seat is Merced. The county is named after ...

: *

Monterey County Monterey County ( ), officially the County of Monterey, is a county located on the Pacific coast in the U.S. state of California. As of the 2020 census, its population was 439,035. The county's largest city and county seat is Salinas. Montere ...

: Transportation Agency for Monterey County *

Napa County Napa County () is a county north of San Pablo Bay located in the northern portion of the U.S. state of California. As of the 2020 census, the population was 138,019. The county seat is the City of Napa. Napa County was one of the original co ...

: Napa Valley Transportation Authority *

Orange County Orange County most commonly refers to: *Orange County, California, part of the Los Angeles metropolitan area Orange County may also refer to: U.S. counties *Orange County, Florida, containing Orlando *Orange County, Indiana *Orange County, New ...

Orange County Transportation Authority The Orange County Transportation Authority (OCTA) is the transportation planning commission for Orange County, California in the Los Angeles metropolitan area. OCTA is responsible for funding and implementing transit and capital projects for th ...

Placer County Placer County ( ; Spanish for "sand deposit"), officially the County of Placer, is a county in the U.S. state of California. As of the 2020 census, the population was 404,739. The county seat is Auburn. Placer County is included in the Great ...

: Placer County Transportation Planning Agency *

Riverside County Riverside County is a county located in the southern portion of the U.S. state of California. As of the 2020 census, the population was 2,418,185, making it the fourth-most populous county in California and the 10th-most populous in the Unit ...

Riverside County Transportation Commission The Riverside County Transportation Commission (RCTC) is the County Transportation Commission (a subdivision of the six-county Southern California Association of Governments metropolitan planning organization) for Riverside County, California, ...

Sacramento County Sacramento County () is a county located in the U.S. state of California. As of the 2020 census, the population was 1,585,055. Its county seat is Sacramento, which has been the state capital of California since 1854. Sacramento County is the ...

: Sacramento Area Council of Governments *

San Benito County San Benito County (; ''San Benito'', Spanish for "St. Benedict"), officially the County of San Benito, is a county located in the Coast Range Mountains of the U.S. state of California. As of the 2020 census, the population was 64,209. The coun ...

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San Bernardino County San Bernardino County (), officially the County of San Bernardino, is a county located in the southern portion of the U.S. state of California, and is located within the Inland Empire area. As of the 2020 U.S. Census, the population was 2,181, ...

San Bernardino County Transportation Authority The San Bernardino County Transportation Authority (SBCTA) is the successor to San Bernardino Associated Governments which is responsible for administering the Measure I half-cent tax which San Bernardino County voters passed most recently in 200 ...

San Diego Association of Governments The San Diego Association of Governments (abbreviated SANDAG) is an association of local San Diego County governments. It is the metropolitan planning organization for the County, with policy makers consisting of mayors, councilmembers, and County ...

San Francisco San Francisco (; Spanish language, Spanish for "Francis of Assisi, Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the List of Ca ...

San Francisco County Transportation Authority The San Francisco County Transportation Authority (SFCTA) is a state chartered sub-regional transportation planning and programming agency for San Francisco County. SFCTA is a separate legal entity from the San Francisco Municipal Transportation ...

San Joaquin County San Joaquin County (; Spanish language, Spanish: ''San Joaquín'', meaning "Joachim, St. Joachim"), officially the County of San Joaquin, is a county (United States), county in the U.S. state of California. As of the 2020 United States Census, 20 ...

: San Joaquin Council of Governments *

San Luis Obispo County San Luis Obispo County (), officially the County of San Luis Obispo, is a county on the Central Coast of California. As of the 2020 census, the population was 282,424. The county seat is San Luis Obispo. Junípero Serra founded the Mission ...

: none since 1996 *

San Mateo County San Mateo County ( ), officially the County of San Mateo, is a county located in the U.S. state of California. As of the 2020 census, the population was 764,442. Redwood City is the county seat, and the third most populated city following Daly ...

: City/County Association of Governments of San Mateo County *

Santa Barbara County Santa Barbara County, California, officially the County of Santa Barbara, is located in Southern California. As of the 2020 census, the population was 448,229. The county seat is Santa Barbara, and the largest city is Santa Maria. Santa Barba ...

Santa Barbara County Association of Governments Santa Barbara County, California, officially the County of Santa Barbara, is located in Southern California. As of the 2020 United States Census, 2020 census, the population was 448,229. The county seat is Santa Barbara, California, Santa Barbara ...

Santa Clara County Santa Clara County, officially the County of Santa Clara, is the sixth-most populous county in the U.S. state of California, with a population of 1,936,259, as of the 2020 United States Census, 2020 census. Santa Clara County and neighboring Sa ...

Santa Clara Valley Transportation Authority The Santa Clara Valley Transportation Authority, more commonly known simply as the Valley Transportation Authority (VTA), is a special district responsible for public transit services, congestion management, specific highway improvement project ...

* Santa Cruz County:

Santa Cruz County Regional Transportation Commission Santa Claus, also known as Father Christmas, Saint Nicholas, Saint Nick, Kris Kringle, or simply Santa, is a legendary figure originating in Western Christian culture who is said to bring children gifts during the late evening and overnight ...

Shasta County Shasta County (), officially the County of Shasta, is a county in the northern portion of the U.S. state of California. Its population is 182,155 as of the 2020 census, up from 177,223 from the 2010 census. The county seat is Redding. Shasta ...

: Shasta County Regional Transportation Planning Agency *

Solano County Solano County () is a county located in the U.S. state of California. As of the 2020 census, the population was 453,491. The county seat is Fairfield. Solano County comprises the Vallejo–Fairfield, CA Metropolitan Statistical Area, which is ...

: Solano Transportation Authority *

Sonoma County Sonoma County () is a county (United States), county located in the U.S. state of California. As of the 2020 United States Census, its population was 488,863. Its county seat and largest city is Santa Rosa, California, Santa Rosa. It is to the n ...

: Sonoma County Transportation Authority *

Stanislaus County , image_skyline = , image_caption = Images, from top down, left to right: Modesto Arch, Knights Ferry's General Store, a view of the Tuolumne River from Waterford , image_flag = , i ...

Stanislaus Council of Governments Stanislav and variants may refer to: People * Stanislav (given name), a Slavic given name with many spelling variations (Stanislaus, Stanislas, Stanisław, etc.) Places * Stanislav, a coastal village in Kherson, Ukraine * Stanislaus County, Cal ...

Sutter County Sutter County is a county located in the U.S. state of California. As of the 2020 census, the population was 99,633. The county seat is Yuba City. Sutter County is included in the Yuba City, CA Metropolitan Statistical Area as well as the Sacra ...

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Tulare County Tulare County ( ) is a county located in the U.S. state of California. As of the 2020 census, the population was 473,117. The county seat is Visalia. The county is named for Tulare Lake, once the largest freshwater lake west of the Great Lakes. ...

Tulare County Association of Governments Tulare may refer to: * , a United States Navy attack cargo ship in commission from 1956 to 1986 Places Serbia * Tulare, Medveđa * Tulare (Prokuplje) United States * Tulare, California * Tulare, South Dakota * Tulare County, California * Tulare ...

Ventura County Ventura County () is a county in the southern part of the U.S. state of California. As of the 2020 census, the population was 843,843. The largest city is Oxnard, and the county seat is the city of Ventura. Ventura County comprises the Oxnar ...

Ventura County Transportation Commission The Ventura County Transportation Commission (VCTC) is the public sector transportation planning body for Ventura County, California. The VCTC oversees highway, bus, aviation, rail and bicycle activity and controls the use of government funds for ...

Yolo County Yolo County (; Wintun: ''Yo-loy''), officially the County of Yolo, is a county located in the northern portion of the U.S. state of California. As of the 2020 census, the population was 216,403. Its county seat is Woodland. Yolo County is incl ...

: Yolo County Transportation District *

Yuba County Yuba County (; Maidu: ''Yubu'') is a county in the U.S. state of California. As of the 2020 U.S. Census, the population was 81,575. The county seat is Marysville. Yuba County is included in the Yuba City, California Metropolitan Statistical A ...

List of congestion management agencies

See also

References

Further reading