Connecticut Administrative Code › Title 22a - Environmental Protection › 174 - Abatement of Air Pollution › Section 22a-174-27 - Emission standards and on-board diagnostic II test requirements for periodic motor vehicle inspection and maintenance

Current through July 10, 2024
(a)
Applicability.
This section shall apply to any owner or operator of a 1979 and
				later model year motor vehicle that is not an antique, rare or special interest
				motor vehicle as defined in section
				14-1 of
				the Connecticut general statutes. This section shall not apply to motor
				vehicles that are exempt from the periodic air pollution control system
				inspection and maintenance requirements pursuant to subsection (c) of section
				l4-l64c of the Connecticut general statutes.
(b)
Definitions.
As used in this
			 section:
(1) "ASM 2525" or "Acceleration
			 Simulation Mode Test" means an emissions test to analyze exhaust emissions of
			 CO, NO, and HC performed at a steady state of twenty-five (25) miles per hour
			 (mph) and utilizing a dynamometer load set to simulate twenty-five (25%) of the
			 power required to accelerate the particular vehicle being tested at 3.3 mph per
			 second until a speed of twenty-five (25) mph is attained;
(2) "CO" means carbon monoxide;
(3) "Gross Vehicle Weight Rating" or "GVWR"
			 means the value specified by the manufacturer as the maximum loaded weight of a
			 single or a combination (articulated) vehicle, or its registered gross weight,
			 whichever is greater. The GVWR of a combination (articulated) vehicle commonly
			 referred to as the "Gross Combination Weight Rating" or GCWR is the GVWR of the
			 power unit plus the GVWR of the towed unit or units;
(4) "HC" means hydrocarbon;
(5) "Heavy-duty gasoline powered vehicle"
			 means any motor vehicle fueled by gasoline that is rated at greater than eight
			 thousand five hundred (8500) pounds GVWR and less than or equal to ten thousand
			 (10,000) pounds GVWR;
(6)
			 "Light-duty truck" or "LDT" means a motor vehicle rated at eight thousand five
			 hundred (8500) pounds GVWR or less and is designed:
(A) To transport property or ten (l0) or more
			 persons, not including the operator; or
(B) With features enabling off-street or
			 off-highway operation and use;
(7) "Light-duty vehicle" or "LDV" means a
			 motor vehicle that is designed:
(A) To carry
			 not more than ten (l0) persons, including the operator; and
(B) To transport persons and their property
			 with at least fifty percent (50%) of the total area enclosed by the outermost
			 body contour lines, excluding the area enclosing the engine;
(8) "Loaded opacity test
			 procedure" means an analysis of exhaust opacity measured by an opacity meter
			 and utilizing a dynamometer load;
(9) "Loaded vehicle weight" or "LVW" means
			 vehicle curb weight plus three hundred (300) pounds;
(10) "Model year" means a motor vehicle
			 manufacturer's annual production period that includes January 1 of such
			 calendar year or, if the manufacturer has no annual production period, the
			 production period that includes January 1 of such year;
(11) "Modified snap-acceleration smoke
			 opacity test procedure" means an analysis of exhaust opacity in accordance with
			 a variant of the "snap-acceleration smoke opacity test" defined in section
			 14-164i-1
			 of the Regulations of Connecticut State Agencies;
(12) "NO" means nitric oxide;
(13) "On-board diagnostic II system" or "OBD
			 II system" means a computerized self diagnostic system in a LDV or LDT that
			 registers faults indicating malfunctions and deteriorations of the LDV's OR
			 LDT's exhaust and evaporative emission control components;
(14) "Pre-conditioned two speed idle test
			 procedure" means an analysis of exhaust emissions concentrations of CO, in
			 percent by volume (VOL. %), and HC, in parts per million (ppm); and
(15) "Vehicle curb weight" is defined as in
			 40
			 CFR 86.082-2.