2023 Colorado Revised Statutes › Title 42 - VEHICLES AND TRAFFIC (§§ 42-1-101 — 42-21-106) › REGULATION OF VEHICLES AND TRAFFIC (§§ 42-4-101 — 42-4-2501) › Article 4 - REGULATION OF VEHICLES AND TRAFFIC (§§ 42-4-101 — 42-4-2501) › Part 4 - DIESEL INSPECTION PROGRAM (§§ 42-4-401 — 42-4-414) › Section 42-4-401 - Definitions

As used in this part 4, unless the context otherwise requires:
(1)
"Certification of emissions control" means one of the following certifications, issued to the owner of a diesel vehicle which is subject to the diesel inspection program in order to indicate the status of inspection requirement compliance of such vehicle:
(a)
"Certification of diesel smoke opacity compliance" is a document which indicates that the smoke emissions from the vehicle comply with applicable smoke opacity limits at the time of inspection or after required adjustments or repairs;
(b)
"Certification of diesel smoke opacity waiver" is a document which indicates that the smoke emissions from the vehicle does not comply with the applicable smoke opacity limits after inspection, adjustment, and emissions related repairs.
(2)
"Commission" means the air quality control commission.
(3)
"Diesel emissions inspection station" means a facility which meets the requirements established by the commission, is licensed by the executive director, and is so equipped as to enable a diesel vehicle emissions-opacity inspection to be performed.
(4)
"Diesel emissions inspector" means a person possessing a valid license to perform diesel emissions-opacity inspections in compliance with the requirements of the commission.
(5)
"Diesel powered motor vehicle" or "diesel vehicle" as applicable to opacity inspections, includes only a motor vehicle with four wheels or more on the ground, powered by an internal combustion, compression ignition, diesel fueled engine, and also includes any motor vehicle having a personal property classification of A, B, or C, pursuant to section
42-3-106
, as specified on its vehicle registration, and for which registration in this state is required for operation on the public roads and highways. "Diesel vehicle" does not include: Vehicles registered under section
42-12-301
; vehicles taxed under section
42-3-306 (4)
; or off-the-road diesel powered vehicles or heavy construction equipment.
(6)
"Executive director" means the executive director of the department of revenue or the executive director's designee.
(6.3)
"Heavy-duty diesel vehicle" means a vehicle that is greater than fourteen thousand pounds gross vehicle weight rating.
(6.7)
"Light-duty diesel vehicle" means a vehicle that is less than or equal to fourteen thousand pounds gross vehicle weight rating.
(7)
"Opacity meter" means an optical instrument that is designed to measure the opacity of diesel exhaust gases.
(8)
"Program area" means the counties of Adams, Arapahoe, Boulder, Douglas, El Paso, Jefferson, Larimer, and Weld, and the cities and counties of Broomfield and Denver, excluding the following areas:
(a)
That portion of Adams county which is east of Kiowa creek (Range 62 West, Townships 1, 2, and 3 South) between the Adams-Arapahoe county line and the Adams-Weld county line;
(b)
That portion of Arapahoe county which is east of Kiowa creek (Range 62 West, Townships 4 and 5 South) between the Arapahoe-Elbert county line and the Arapahoe-Adams county line;
(c)
That portion of El Paso county which is east of the following boundary, defined on a south-to-north axis: From the El Paso-Pueblo county line north (upstream) along Chico creek (Ranges 63 and 64 West, Township 17 South) to Hanover road, then east along Hanover road (El Paso county route 422) to Peyton highway, then north along Peyton highway (El Paso county route 463) to Falcon highway, then west on Falcon highway (El Paso county route 405) to Peyton highway, then north on Peyton highway (El Paso county route 405) to Judge Orr road, then west on Judge Orr road (El Paso county route 108) to Elbert road, then north on Elbert road (El Paso county route 91) to the El Paso-Elbert county line;
(d)
That portion of Larimer county which is west of the boundary defined on a north-to-south axis by Range 71 West and that portion which is north of the boundary defined on an east-to-west axis by Township 10 North;
(e)
That portion of Weld county which is outside the corporate boundaries of Greeley, Evans, La Salle, and Garden City and, in addition, is outside the following boundary: Beginning at the point of intersection of the west boundary line of section 21, township six north, range sixty-six west and state highway 392, east along state highway 392 to the point of intersection with Weld county road 37; then south along Weld county road 37 to the point of intersection with Weld county road 64; then east along Weld county road 64 to the point of intersection with Weld county road 43; then south along Weld county road 43 to the point of intersection with Weld county road 62; then east along Weld county road 62 to the point of intersection with Weld county road 49; then south along Weld county road 49 to the point of intersection with the south boundary line of section 13, township five north, range sixty-five west; then west along the south boundary line of section 13, township five north, range sixty-five west, section 14, township five north, range sixty-five west, and section 15, township five north, range sixty-five west; then, from the southwest corner of section 15, township five west, range sixty-five west, south along the east boundary line of section 21, township five north, range sixty-five west, and section 28, township five north, range sixty-five west; then west along the south boundary line of section 28, township five north, range sixty-five west; then south along the east boundary line of section 32, township five north, range sixty-five west, and section 5, township four north, range sixty-five west; then west along the south boundary line of section 5, township four north, range sixty-five west, section 6, township four north, range sixty-five west, and section 1, township four north, range sixty-six west; then north along the west boundary line of section 1, township four north, range sixty-six west, and section 36, township five north, range sixty-six west; then, from the point of intersection of the west boundary line of section 36, township five north, range sixty-six west and Weld county road 52, west along Weld county road 52 to the point of intersection with Weld county road 27; then north along Weld county road 27 to the point of intersection with the south boundary line of section 18, township five north, range sixty-six west; then west along the south boundary line of section 18, township five north, range sixty-six west, section 13, township five north, range sixty-seven west, and section 14, township five north, range sixty-seven west; then north along the west boundary line of section 14, township five north, range sixty-seven west, section 11, township five north, range sixty-seven west, and section 2, township five north, range sixty-seven west; then east along the north boundary line of section 2, township five north, range sixty-seven west, section 1, township five north, range sixty-seven west, section 6, township five north, range sixty-six west, and section 5, township five north, range sixty-six west; then, from the northeast corner of section 5, township five north, range sixty-six west, north along the west boundary line of section 33, township six north, range sixty-six west, section 28, township six north, range sixty-six west, and section 21, township six north, range sixty-six west, to the point of beginning.
(9)
"Smoke limit" means the maximum amount of allowable smoke opacity level as established by the commission.
L. 94: Entire title amended with relocations, p. 2315, § 1, effective 1/1/1995. L. 2003: (6.3) and (6.7) added and (7) amended, p. 1024, § 2, effective August 6. L. 2005: (5) amended, p. 1175, § 15, effective August 8. L. 2009: (8) amended, (SB 09 -003), ch. 322, p. 1718, § 4, effective June 1. L. 2010: (5) amended, (SB 10 -212), ch. 412, p. 2038, § 18, effective July 1. L. 2011: (5) amended, (SB 11 -031), ch. 86, p. 247, § 13, effective August 10.
This section is similar to former § 25-7-601 as it existed prior to 1994, and the former § 42-4-401 was relocated to §
42-4-501
.