Spare the Air is a program established by the

Bay Area Air Quality Management District The Bay Area Air Quality Management District (BAAQMD) is a public agency that regulates the stationary sources of air pollution in the nine counties of California's San Francisco Bay Area: Alameda, Contra Costa, Marin, Napa, San Francisco, Sa ...

in 1991 to combat

air pollution Air pollution is the contamination of air due to the presence of substances in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. There are many different types ...

during the summer in the

San Francisco Bay Area The San Francisco Bay Area, often referred to as simply the Bay Area, is a populous region surrounding the San Francisco, San Pablo, and Suisun Bay estuaries in Northern California. The Bay Area is defined by the Association of Bay Area Go ...

, the season when clear skies, hot temperatures, lighter winds, and a strong

temperature inversion In meteorology, an inversion is a deviation from the normal change of an atmospheric property with altitude. It almost always refers to an inversion of the air temperature lapse rate, in which case it is called a temperature inversion. No ...

combine and trap air pollutants near the ground. Spare the Air days are declared for days in which levels of

ground-level ozone Ground-level ozone (O3), also known as surface-level ozone and tropospheric ozone, is a trace gas in the troposphere (the lowest level of the Earth's atmosphere), with an average concentration of 20–30 parts per billion by volume (ppbv), with cl ...

(a constituent of

smog Smog, or smoke fog, is a type of intense air pollution. The word "smog" was coined in the early 20th century, and is a portmanteau of the words ''smoke'' and '' fog'' to refer to smoky fog due to its opacity, and odor. The word was then inte ...

) are predicted to exceed the

EPA The Environmental Protection Agency (EPA) is an independent executive agency of the United States federal government tasked with environmental protection matters. President Richard Nixon proposed the establishment of EPA on July 9, 1970; it be ...

's federal health-based standard of 84 ppb, or an

air quality index An air quality index (AQI) is used by government agencies to communicate to the public how polluted the air currently is or how polluted it is forecast to become. AQI information is obtained by averaging readings from an air quality sensor, whi ...

over 100. On a Spare the Air day, Bay Area residents are asked through

radio Radio is the technology of signaling and communicating using radio waves. Radio waves are electromagnetic waves of frequency between 30 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmit ...

and

television Television, sometimes shortened to TV, is a telecommunication medium for transmitting moving images and sound. The term can refer to a television set, or the medium of television transmission. Television is a mass medium for advertisin ...

announcements to reduce their driving, refrain from using gas-powered gardening equipment and curb other air polluting activities such as painting and

aerosol spray Aerosol spray is a type of dispensing system which creates an aerosol mist of liquid particles. It comprises a can or bottle that contains a payload, and a propellant under pressure. When the container's valve is opened, the payload is forced out ...

can usage. People especially sensitive to smog are advised to limit their time outdoors. Spare the Air nights are also issued during the winter when

particulate Particulates – also known as atmospheric aerosol particles, atmospheric particulate matter, particulate matter (PM) or suspended particulate matter (SPM) – are microscopic particles of solid or liquid matter suspended in the air. The te ...

emissions Emission may refer to: Chemical products * Emission of air pollutants, notably: **Flue gas, gas exiting to the atmosphere via a flue ** Exhaust gas, flue gas generated by fuel combustion ** Emission of greenhouse gases, which absorb and emit rad ...

often coming from wood burning and other activities become trapped in stagnant air masses. During winter Spare the Air nights, wood burning is banned and violators may have to attend a class or pay a fine of up to $500. Exceptions are allowed if a household has a power outage.

Barbecue Barbecue or barbeque (informally BBQ in the UK, US, and Canada, barbie in Australia and braai in South Africa) is a term used with significant regional and national variations to describe various cooking methods that use live fire and smoke t ...

s are permitted on a Spare the Air Day, but are discouraged and the use of lower-pollution gas fuels rather than wood or charcoal is recommended.

Free transportation days

Non-compliance with federal air pollution standards can mean losing federal money for transportation projects like wider roads, new bridges, and mass transit. To avoid these penalties, each year for a certain number of Spare the Air days that occur on non-

holiday A holiday is a day set aside by custom or by law on which normal activities, especially business or work including school, are suspended or reduced. Generally, holidays are intended to allow individuals to celebrate or commemorate an event or tra ...

weekdays The weekdays and weekend are the complementary parts of the week devoted to labour and rest, respectively. The legal weekdays (British English), or workweek (American English), is the part of the seven-day week devoted to working. In most of t ...

, many Bay Area transit agencies offer free rides to encourage

public transportation Public transport (also known as public transportation, public transit, mass transit, or simply transit) is a system of transport for passengers by group travel systems available for use by the general public unlike private transport, typical ...

use over cars. The number of allocated fare-free days varies from year to year, depending on available funding. This program's subsidy drew increased media attention in 2006 when the traditional three annual free days jumped to six in response to the number of annual Spare the Air days declared being the highest in seven years. In past years there have been multiple free transit Spare the Air days. However, in 2008, the number was reduced to only one free transit day, June 19. There has been no free transit program since 2009. Historically, the following transit providers have participated in the free ride program: *

Altamont Corridor Express The Altamont Corridor Express (also known as ACE, formerly Altamont Commuter Express) is a commuter rail service in California, connecting Stockton and San Jose during peak hours only. ACE is named for the Altamont Pass, through which it runs ...

(ACE) *

AC Transit AC Transit (Alameda-Contra Costa Transit District) is an Oakland-based public transit agency serving the western portions of Alameda and Contra Costa counties in the East Bay of the San Francisco Bay Area. AC Transit also operates "Transbay" ro ...

* AirBART *

Alameda Harbor Bay Ferry San Francisco Bay Ferry is a public transit passenger ferry service in the San Francisco Bay, administered by the San Francisco Bay Area Water Emergency Transportation Authority (WETA). In , the system had a ridership of , or about per weekday a ...

* Alameda-Oakland Ferry *

BART Bart is a masculine given name, usually a diminutive of Bartholomew, sometimes of Barton, Bartolomeo, etc. Bart is a Dutch and Ashkenazi Jewish surname, and derives from the name ''Bartholomäus'', a German form of the biblical name ''Bartho ...

* Benicia Breeze *

Caltrain Caltrain (reporting mark JPBX) is a California commuter rail line serving the San Francisco Peninsula and Santa Clara Valley (Silicon Valley). The southern terminus is in San Jose at Tamien station with weekday rush hour service running as fa ...

Cloverdale Transit Cloverdale Transit is a local bus route operated by Sonoma County Transit serving the city of Cloverdale, California Cloverdale is a city in Sonoma County, California, United States; it is both the westernmost and the northernmost city in the ...

County Connection The County Connection (officially, the Central Contra Costa Transit Authority, CCCTA) is a Concord-based public transit agency operating fixed-route bus and ADA paratransit (County Connection LINK) service in and around central Contra Costa County ...

Dumbarton Express Dumbarton Express is a regional public transit service in the San Francisco Bay Area connecting Alameda, San Mateo, and Santa Clara Counties via the Dumbarton Bridge, the system's namesake. The bus service is funded by a consortium of five tra ...

* Emery Go Round (always free) * Fairfield-Suisun Transit *

Golden Gate Ferry Golden Gate Ferry is a commuter ferry service operated by the Golden Gate Bridge, Highway and Transportation District in San Francisco Bay, part of the Bay Area of Northern California, United States. Regular service is run to the Ferry Build ...

Golden Gate Transit Golden Gate Transit (GGT) is a public transportation system serving the North Bay region of the San Francisco Bay Area in California, United States. It primarily serves Marin County, Sonoma County, and San Francisco, and also provides limited s ...

Napa VINE VINE Transit is a public transportation service in Napa County, California, United States; it is managed under the Napa Valley Transportation Authority and operated by Transdev. The system offers extensive service throughout the county along with ...

San Francisco Muni The San Francisco Municipal Railway (SF Muni or Muni), is the public transit system for the City and County of San Francisco. It operates a system of bus routes (including trolleybuses), the Muni Metro light rail system, three historic cable ...

Petaluma Transit Petaluma Transit is the public bus service in the city of Petaluma, Sonoma County, California. The system connects with several Sonoma County Transit routes for further travel within the county, Golden Gate Transit routes for travel between the ci ...

* Rio Vista Breeze *

SamTrans SamTrans (stylized as samTrans; officially the San Mateo County Transit District) is a public transport agency in and around San Mateo, California, in the San Francisco Bay Area. It provides bus service throughout San Mateo County and into port ...

Santa Rosa CityBus Santa Rosa CityBus is a public transportation agency providing bus service in the northern California city of Santa Rosa. It provides service for over 2.8 million passenger trips annually. Routes A total of 18 routes are operated by Santa Rosa C ...

Sonoma County Transit Sonoma County Transit is a public transportation system based in Sonoma County, California. Cities and communities served As the primary bus system in the county, Sonoma County Transit (SCT) operates to the following communities, listed by zone: ...

Tri-Delta Transit Tri Delta Transit, formally the Eastern Contra Costa Transit Authority, is a joint powers agency of the governments of Pittsburg, Antioch, Oakley, Brentwood, and Contra Costa County that provides bus service for the eastern area of Contra Cost ...

* Union City Transit * Vacaville City Coach * Vallejo Transit * VTA *

WestCAT WestCAT is a public transportation service in western Contra Costa County (north of Oakland, CA). It is a service of the Western Contra Costa Transit Authority. The Western Contra Costa County Transit (WestCAT) was established in August 1977 as ...

Wheels A wheel is a circular component that is intended to rotate on an axle bearing. The wheel is one of the key components of the wheel and axle which is one of the six simple machines. Wheels, in conjunction with axles, allow heavy objects to be ...

Criticism of free transportation days

The program has drawn criticism for doing little to alleviate pollution.

University of California, Berkeley The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California) is a public land-grant research university in Berkeley, California. Established in 1868 as the University of California, it is the state's first land-grant u ...

researcher Aaron Golub calculated the cost per ton of pollution removed as a result of Spare the Air was estimated at $100,000 per ton for

nitrogen oxide Nitrogen oxide may refer to a binary compound of oxygen and nitrogen, or a mixture of such compounds: Charge-neutral *Nitric oxide (NO), nitrogen(II) oxide, or nitrogen monoxide *Nitrogen dioxide (), nitrogen(IV) oxide * Nitrogen trioxide (), or n ...

and

hydrocarbons In organic chemistry, a hydrocarbon is an organic compound consisting entirely of hydrogen and carbon. Hydrocarbons are examples of group 14 hydrides. Hydrocarbons are generally colourless and hydrophobic, and their odors are usually weak or ex ...

and $10 million per ton for particulate matter, compared to $5,000 and $20,000 per ton respectively for a pollution reduction program. The cost for Spare the Air free fares is about $2 million a day, and MTC has claimed that the goal of the program is not reducing air pollution, but rather as an incentive for people to consider public transit. In addition, the free fares also attract criminal elements. Crime on BART increased, with BART police blaming youths riding for free for fights, assaults, burglaries, and robberies. Calls to BART police spiked by over 100%, compared to a 10% increase in the number of passengers on the same day the previous year. Because of this, BART is considering restricting free rides to only the morning commute. Riders of ferries also complained about severe overcrowding, with ferry ridership on the Sausalito ferry experiencing a 500% increase from normal and ridership on the Larkspur ferry increasing by 150% from ridership a week previous.2006 Spare the Air Overview
/ref>

References

External links

Spare the Air program home pageSpare the Air frequently asked questions
(

KGO-TV KGO-TV (channel 7) is a television station licensed to San Francisco, California, United States, serving as the San Francisco Bay Area's ABC network outlet. Owned and operated by the network's ABC Owned Television Stations division, KGO-TV maint ...

) {{DEFAULTSORT:Spare The Air Program Environment of California Public transportation in the San Francisco Bay Area Air pollution in California Environment of the San Francisco Bay Area

Free transportation days

Criticism of free transportation days

See also

References

External links