As used in this Chapter, all terms not defined herein shall
have the meaning given them in Chapter 1200-3-2:
(1) Air Pollution is any particulate matter
or any gas or vapor other than water or any combination thereof including any
physical, chemical, biological, radioactive substance or matter which is
emitted into or otherwise enters the ambient air.
(2) Antique motor vehicle is any motor
vehicle over twenty-five years old which is owned solely as a collectors' item
and is used for participation in club activities, exhibits, tours, parades and
similar uses, but in no event for general transportation.
(3) Carbon dioxide is a compound consisting
of the chemical formula (CO2).
(4) Carbon monoxide is a compound consisting
of the chemical formula (CO).
Catalytic converter is a pollution control device containing a catalyst for
converting automobile exhaust into mostly harmless products.
(6) Centralized Network means that motor
vehicle inspections are conducted by the State and/or a single contractor in an
(7) Certificate of Compliance
is a certification issued by a Department vehicle inspector or a fleet vehicle
inspector that the motor vehicle identified on the certificate complies with
the emission performance and anti-tampering criteria appropriate to the vehicle
as specified in this regulation.
(8) Check Engine Light: for the definition
see Malfunction Indicator Light (MIL).
(9) Contractor is a person (as defined in
1200-3-2 ) with whom the Department has a contract that provides for the
operation of one or more Official Inspection Stations.
(10) Department means the Tennessee
Department of Environment and Conservation, Division of Air Pollution
(11) Department Vehicle
Inspector is any person employed by the Tennessee Division of Air Pollution
Control and/or contractor who is designated by the Technical Secretary as
qualified to perform vehicle emissions performance and anti-tampering
Trouble Codes (DTCs) is an alphanumeric code which is set in a vehicle's
onboard computer when a monitor detects a condition likely to lead to (or has
already produced) a component or system failure or otherwise contribute to
exceeding emissions standards by 1.5 times the certification FTP
(13) Diesel powered motor
vehicle is a motor vehicle powered by a compression-ignition internal
powered motor vehicle is a motor vehicle which uses a propulsive unit powered
exclusively by electricity.
Exhaust emissions are substances emitted into the atmosphere from any opening
downstream from the exhaust ports of a motor vehicle engine.
(16) Exhaust gas analyzer is a device for
sensing the amount of air pollutants, including carbon monoxide and
hydrocarbons, in the exhaust emissions of a motor vehicle. For the purpose of
this regulation, this shall mean analyzing devices of the nondispersive
infrared type or any other analyzing devices that provide equal or greater
accuracy as approved by the Technical Secretary.
(17) Factory-Installed Motor Vehicle
Pollutant Control System is a motor vehicle pollution control system installed
by the vehicle or engine manufacturer to comply with the United States
government motor vehicles emission control laws and regulations.
(18) Federal Test Procedure (FTP) is the test
procedure used to determine the compliance of vehicles with federal emission
(19) Fleet means 50 or
more light-duty motor vehicles owned by the same person or business entity
which are in-use, registered in any county that has been designated by the
Board to have a motor vehicle inspection and maintenance program in order to
attain and maintain compliance with national ambient air quality standards
within any area of Tennessee or an adjoining state and not owned or held
primarily for the purpose of resale.
(20) Fleet Inspection Location is any motor
vehicle inspection facility operated by a fleet operator holding a valid fleet
Inspection Permit is a certificate issued by the Technical Secretary
authorizing a fleet operator to conduct motor vehicle inspections in accordance
with this regulation and other requirements as determined by the
(22) Fleet Operator is
the person owning a group of motor vehicles which constitute a fleet as defined
in this regulation.
Vehicle Inspector is any person retained by a fleet operator holding a valid
fleet inspection permit and who is certified by the Technical Secretary as
qualified to perform vehicle emissions performance and anti-tampering
(24) Fuel inlet
restrictor is the leaded fuel nozzle restrictor installed on motor vehicles
which was designed for the use of unleaded gasoline only.
(25) Gasoline powered motor vehicle is any
motor vehicle powered by spark-ignition internal combustion engine.
(26) Gross Vehicle Weight Rating (GVWR) is a
term defining the gross vehicle weight as determined from the combined
manufacturer vehicle and maximum load rating.
(27) Heavy-duty motor vehicle is any motor
vehicle having a combined manufacturer vehicle and maximum load rating (GVWR)
to be carried thereon in excess of 10,500 pounds (4,773 kilograms).
(28) Hydrocarbon is any organic compound
consisting predominantly of carbon and hydrogen.
(29) Idle speed means the unloaded engine
speed of a motor vehicle when the accelerator pedal is fully released. In a
vehicle equipped with an automatic transmission, this is with the drive
selector in neutral or park. In a vehicle equipped with a manual transmission,
this is with the gear selector in neutral and the clutch fully engaged. In all
vehicles, the engine operated accessories shall be turned off.
(30) Internal combustion engine is any engine
in which the combustion of gaseous, liquid or pulverized solid fuel takes place
within one or more cylinders, or any engine with one or more combustion
(31) Light-duty motor
vehicle is any motor vehicle having a combined manufacturer vehicle and maximum
load rating (GVWR) to be carried thereon of 10,500 pounds (4,773 kilograms) or
(32) Malfunction Indicator
Light (MIL) is known as the Check Engine light. The Malfunction Indicator Light
is illuminated on the dashboard when conditions exist likely to result in
emissions exceeding FTP standards by 1.5 time or worse. Alternatives include
"Service Engine Soon," as well as an unlabeled icon of an engine.
(33) Manufacturers Idle-speed Specification
is the engine idle speed specified for a particular motor vehicle as printed on
the engine compartment emissions system data plate or in the owners
(34) Model Year means the
annual production period of new motor vehicles or new motor vehicle engines
designated by the calendar year in which such production ends. If the
manufacturer does not designate a production period, the year with respect to
such vehicle or engines shall mean the twelve (12) month period beginning
January of the year in which production thereof begins. The model year for a
motor vehicle constructed by other than the original manufacturer shall be
assigned by the Technical Secretary.
(35) Motor vehicle is any self-propelled
vehicle used for transporting persons or commodities on public roads.
(36) Motor Vehicle Regulatory License is the
annual motor vehicle license required as a condition for legal operation of
certain classes of motor vehicles.
(37) Motorcycle is any motor vehicle having a
seat or saddle for the use of the rider and designed to travel on not more than
three wheels in contact with the ground, and having a curb weight of 2000
pounds (907 kilograms) or less.
(38) New motor vehicle is any motor vehicle
that has never been previously titled or registered in this or any other
jurisdiction and whose ownership document remains as a manufacturer's
certificate of origin.
Official Inspection Station means a facility operated by the Department and/or
contractor to conduct test only vehicle inspections pursuant to this
regulation, in a Centralized Network.
(40) Onboard Diagnostics (OBD) is a system of
vehicle component and condition monitors controlled by a central, onboard
computer designed to signal the motorist when conditions exist which could lead
to a vehicle's exceeding its certification standards by 1.5 times the FTP
(41) OBD Data Link
Connector (DLC) serves as an interface between a vehicle's OBD computer and the
OBD scanner and is usually located under the dashboard on the driver's side.
Connecting an OBD scanner to the DLC allows inspectors and vehicle repair
technicians to read the readiness status of vehicle's onboard monitors as well
as any diagnostic trouble codes.
(42) Pollution Control Device is the
equipment designed by the manufacturer for installation on a motor vehicle for
the purpose of reducing pollutants emitted from the vehicle, or a system or
engine modification on a motor vehicle which causes a reduction of pollutants
emitted from the motor vehicle.
(43) Readiness codes are status flags stored
by a vehicle's onboard computer which is different from the DTC in that it does
not indicate a vehicle fault, but rather whether or not a given monitor has
been run (i.e. whether or not the component or system in question has been
checked to determine if it is functioning properly).
(44) RPM is a term describing the engine
crankshaft revolutions per minute.
(45) Tampering means to remove, render
inoperative, cause to be removed, or make less operative any emission control
device, unless such removal or act to render inoperative or less operative is
for the purpose of motor vehicle disposal or salvage operation.
(46) Technical Secretary is the Technical
Secretary of the Air Pollution Control Board of the State of Tennessee or his
Vehicle Exhaust System means all devices, equipment and systems which transport
exhaust emissions from the exhaust ports of the motor vehicle engine to the
(48) Wheel Tax is the
annual commercial vehicle tax required as a condition for the legal operation
of certain classes of motor vehicles.
(49) Opacity is the degree to which emissions
reduce the transmission of light and obscure the view of an object in the
(50) Low-speed vehicle
means a four-wheeled vehicle manufactured as a non-road vehicle with a gross
vehicle weight of less than 3,000 pounds, capable of twenty miles per hour (20
mph) but not capable of exceeding twenty-five miles per hour (25 mph) on a
paved level surface.
Medium-speed vehicle means any four-wheeled vehicle manufactured as a non-road
vehicle with a gross vehicle weight of less than 3,000 pounds, capable of
thirty miles per hour ( 30 mph) but not capable of exceeding thirty-five miles
per hour (35 mph) on a paved level surface.