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Tailpipe
Emissions
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EPA-regulated vehicle exhaust emissions
released through the vehicle tailpipe.
Tailpipe emissions do not include evaporative
and refueling emissions, which are also
regulated by EPA. EPA published
allowable emission levels and vehicle
certification standards in the Code of
Federal Regulations. Source:
Alternative Fuel Vehicle Group. |
TCEQ
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 The
TCEQ is the Texas Commission on
Environmental Quality. They are the government body in the State of Texas
that regulate most natural resources, including water and irrigation.
The TCEQ is also in charge of bringing fines against people violating
the environmental laws.
Click here for more information: http://www.tceq.state.tx.us/
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Texas Forest Service
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The Texas Forest Service is mandated by law to "assume direction of
all forest interests and all matters pertaining to forestry within the jurisdiction
of the state." Their mission is to "provide statewide leadership
to assure the state's forest, tree and related natural resources are wisely
used, nurtured, protected, and perpetuated for the benefit of all Texans."
Click here
for more information:
http://txforestservice.tamu.edu/default.asp
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Toxic Emission
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Any pollutant
emitted from a source that can negatively affect human health or
the environment. Source: Alternative Fuel Vehicle Group. |
Transportation Conformity
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Conformity is a way to ensure that Federal funding and
approval are given to transportation activities that are consistent
with air quality goals. This means it ensures that these transportation
activities do not worsen air quality or interfere with the purpose
of the State Implementation
Plan (SIP)
, which is to meet the U.S. Environmental Protection
Agency (EPA) standards for air quality. Meeting these standards
often requires emission reductions from mobile sources.
Click here for more information:
http://www.epa.gov/ttn/nsr/
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Two Speed Idle
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Two Speed Idle (TSI) is a type of exhaust emissions test for vehicles
in which a probe is inserted into the vehicle’s tailpipe and reads the
amount of ozone precursors that are being emitted.
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Ultra-Low Emission Vehicle (ULEV)
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Describes vehicle meeting either EPAs CFV,
ULEV standards or CARBs (California
Low-Emission Vehicle Program) ULEV standards.
ULEVs produce fewer emissions that LEVs.
Fleets that purchase CFV ULEVs may earn
credits under the Clean-Fuel Fleet Vehicle
Program. Source: Alternative Fuel
Vehicle Group. |
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Variable Fuel Vehicle (VFV)
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A vehicle that has the capacity of burning
any combination of gasoline and an
alternative fuel. Also known as a
flexible fuel vehicle. Source:
Alternative Fuel Vehicle Group. |
Vehicle Conversion
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Retrofitting a vehicle engine to run on an
alternative fuel. Source: Alternative
Fuel Vehicle Group. |
VIA Metropolitan Transit
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VIA Metropolitan Transit has been in operation since
1978 when it took over public transit operations from the City of
San Antonio. Today, VIA serves over 1,200 square miles of Bexar County,
including San Antonio, 18 additional area municipalities, and unincorporated
areas of the County.
Click here for more information: http://www.viainfo.net/
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VOCs
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Volatile Organic Compounds, which are emitted from various
sources, including motor vehicles, chemical plants, refineries,
factories, consumer and commercial products, plants, and other industrial
sources. |
Voluntary Mobile Source Emission Reduction
Program
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A program established by EPA to encourage
voluntary emission reduction programs that
can be part of a state implementation
program. Source: Alternative Fuel
Vehicle Group. |
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Zero Emission Vehicle (ZEV)
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Any vehicle that is certified by the
California Air Resources Board to have zero
tailpipe emissions. The only vehicles
that currently qualify as ZEVs are electric
vehicles. Source: Alternative Fuel
Vehicle Group. |
