C.R.S. Section 42-4-310
Periodic emissions control inspection required


(1)(a)(I) Subject to subsection (4) of this section, a motor vehicle that is required to be registered in the program area shall not be sold, registered for the first time without a certification of emissions compliance, or reregistered unless the vehicle has passed a clean screen test or has a valid certification of emissions control as required by the appropriate county. The provisions of this subsection (1)(a) do not apply to motor vehicle transactions at wholesale between motor vehicle dealers licensed pursuant to part 1 of article 20 of title 44. An inspection is not required prior to the sale of a motor vehicle with at least twelve months remaining before the vehicle’s certification of emissions compliance expires if the certification was issued when the vehicle was new.

(II)

Intentionally left blank —Ed.

(A)

If title to a roadworthy motor vehicle, as defined in section 42-6-102 (15), for which a certification of emissions compliance or emissions waiver must be obtained pursuant to this paragraph (a) is being transferred to a new owner, the new owner may require at the time of sale that the prior owner provide said certification as required for the county of residence of the new owner.

(B)

The new owner shall submit such certification to the department of revenue or an authorized agent thereof with application for registration of the motor vehicle.

(C)

If such vehicle is being registered in the program area for the first time, the owner shall obtain any certification required for the county where registration is sought and shall submit such certification to the department of revenue or an authorized agent thereof with such owner’s application for the registration of the motor vehicle. A motor vehicle being registered in the program area for the first time may be registered without an inspection or certification if the vehicle has not yet reached its fourth model year or a later model year established by the commission pursuant to section 42-4-306 (8)(b).

(D)

Except for a motor vehicle that was registered as a collector’s item before September 1, 2009, and meets the requirements of sections 42-12-101 (2)(b) and 42-12-404 (2), to be sold or transferred or to renew the registration, a 1976 or newer model motor vehicle registered as a collector’s item under article 12 of this title must be inspected and have a certification of emissions control. The certification of emissions control is valid for sixty months.
(b)(I)(A) Repealed.

(B)

New motor vehicles owned by the United States government or an agency thereof or by the state of Colorado or any agency or political subdivision thereof that would be registered in the program area shall be issued a certification of emissions compliance without inspection that shall expire on the anniversary of the day of the issuance of such certification when such vehicle has reached its fourth model year or a later model year established by the commission pursuant to section 42-4-306 (8)(b). Prior to the expiration of such certification such vehicle shall be inspected and a certification of emissions control shall be obtained therefor.

(C)

Effective May 28, 1999, 1982 and newer model motor vehicles that are owned by the United States government or an agency thereof or by the state of Colorado or any agency or political subdivision thereof that would be registered in the program area shall be inspected every two years, and shall be issued a certification of emissions compliance that shall be valid for twenty-four months; except that vehicles owned or operated by any agency or political subdivision that is authorized and licensed pursuant to section 42-4-309 to inspect fleet vehicles shall be inspected annually.

(D)

Effective May 28, 1999, 1981 and older model motor vehicles that are owned by the United States government or an agency thereof or by the state of Colorado or any agency or political subdivision thereof that would be registered in the program area shall be inspected once each year, and shall be issued a certification of emissions compliance that shall be valid for twelve months.

(E)

Any vehicle subject to this subparagraph (I) that is suspected of having an emissions problem may undergo a voluntary inspection as provided in subparagraph (IV) of paragraph (c) of this subsection (1).

(II)

Intentionally left blank —Ed.

(A)

Motor vehicle dealers shall purchase verification of emissions test forms for the sum of twenty-five cents per form from the department or persons authorized by the department to make such sales to be used only on new motor vehicles. No refund or credit shall be allowed for any unused verification of emissions test forms. New motor vehicles required under this section to have a verification of emissions test form shall be issued a certification of emissions compliance without inspection, which shall expire on the anniversary of the day of the issuance of such certification when such vehicle has reached its fourth model year or a later model year established by the commission pursuant to section 42-4-306 (8)(b). Prior to the expiration of such certification such vehicle shall pass a clean screen test or be inspected and a certification of emissions control shall be obtained therefor.

(B)

1982 and newer model motor vehicles required pursuant to this section to have a certification of emissions control shall be inspected at the time of the sale or transfer of any such vehicle and, prior to registration renewal, shall be issued a certification of emissions control that shall be valid for twenty-four months except as provided under section 42-4-309. An inspection is not required prior to the sale of a motor vehicle with at least twelve months remaining before the vehicle’s certification of emissions compliance expires if such certification was issued when the vehicle was new. This sub-subparagraph (B) does not apply to the sale of a motor vehicle that is inoperable or otherwise cannot be tested in accordance with regulations promulgated by the department of revenue if the seller of the motor vehicle provides a written notice to the purchaser pursuant to the requirements of subsection (4) of this section.

(C)

1981 and older model motor vehicles required pursuant to this section to have a certification of emissions control shall be inspected at the time of the sale or transfer of any such vehicle and, prior to registration renewal, shall be issued a certification of emissions control that shall be valid for twelve months. This sub-subparagraph (C) does not apply to the sale of a motor vehicle which is inoperable or otherwise cannot be tested in accordance with regulations promulgated by the department of revenue if the seller of the motor vehicle provides a written notice to the purchaser pursuant to the requirements of subsection (4) of this section.

(III)

Upon registration or renewal of registration of a motor vehicle required to have a certification of emissions control, the department shall issue a tab identifying the vehicle as requiring certification of emissions control. The tab shall be displayed from the time of registration. The verification of emissions test shall also be displayed on the motor vehicle in a location prescribed by the department of revenue consistent with federal regulations.

(c)

Intentionally left blank —Ed.

(I)

Effective October 1, 1989, those motor vehicles owned by nonresidents who reside in either the basic or enhanced emissions program areas or by residents who reside outside the program area who are employed for at least ninety days in any twelve-month period in a program area or who are attending school in a program area, and are operated in either the basic or enhanced emissions program areas for at least ninety days, shall be inspected as required by this section and a valid certification of emissions compliance or emissions waiver shall be obtained as required for the county where said person is employed or attends school. Such nonresidents include, but are not limited to, all military personnel, temporarily assigned employees of business enterprises, and persons engaged in activities at the Olympic training center.

(II)

Any person owning or operating a business and any postsecondary educational institution located in a program area shall inform all persons employed by such business or attending classes at such institution that they are employed or attending classes in a program area and are required to comply with the provisions of subparagraph (I) of this paragraph (c).

(III)

Vehicles that are registered in a program area and are being operated outside such area but within another program area shall comply with all program requirements of the area where such vehicles are being operated. Vehicles registered in a program area that are being temporarily operated outside the state at the time of registration or registration renewal may apply to the department of revenue for a temporary exemption from program requirements. Upon return to the program area, such vehicles must be in compliance with all requirements within fifteen days. A temporary exemption shall not be granted if the vehicle will be operated in an emissions testing area in another state unless proof of emissions from that area is submitted.

(IV)

Nothing in this section shall be deemed to prevent or shall be interpreted so as to hinder the voluntary inspection of any motor vehicle in the enhanced emissions program. A certificate of emissions control issued under the provisions of the enhanced emissions program shall be acceptable as a demonstration of compliance within the basic program for vehicle registration purposes. In order to provide motorist protection, those vehicles voluntarily inspected and that fail said inspection but that are warrantable under manufacturers’ emissions control warranties pursuant to section 207 (A) and (B) of the federal act shall comply with the emissions-related repair requirements of this part 3.

(V)

Motor vehicles operated in the enhanced emissions program area, and required to be inspected pursuant to subparagraph (I) of this paragraph (c), shall comply with the inspection requirements of the enhanced emissions program area and are not required to comply with the inspection requirements of the basic emissions program area.

(d)

Intentionally left blank —Ed.

(I)

Repealed.

(II)

Intentionally left blank —Ed.

(A)

For the basic emissions program, effective January 1, 1994, for businesses which operate nineteen or fewer motor vehicles and for 1981 or older private motor vehicles required to be registered in the basic emissions program area, after any adjustments or repairs required pursuant to section 42-4-306, if total expenditures of at least seventy-five dollars have been made to bring the vehicle into compliance with applicable emissions standards and the vehicle still does not meet such standards, a certification of emissions waiver shall be issued for such vehicle.
(B)(Deleted by amendment, L. 2011, (SB 11-031), ch. 86, p. 246, § 11, effective August 10, 2011.)(III) Repealed.

(IV)

For the basic emissions program, effective January 1, 1994, for businesses that operate nineteen or fewer vehicles and for private motor vehicles only of a model year 1982 or later required to be registered in the basic emissions program area, after any adjustments or repairs required pursuant to section 42-4-306, if total expenditures of at least two hundred dollars have been made to bring the vehicle into compliance with the applicable emissions standards and the vehicle still does not meet such standards, a certification of emissions waiver shall be issued for such vehicle. For vehicles not older than two years or that have not more than twenty-four thousand miles, or such period of time and mileage as established for warranty protection by amendments to federal regulations, no emissions-related repair waivers shall be issued due to the provisions and enforcement of section 207 (A) and (B) of the federal act relating to emissions control systems components and performance warranties. Vehicles that are owned by the state of Colorado or any agency or political subdivision thereof are not eligible for emissions-related repair waivers under this subparagraph (IV).

(V)

Repealed.

(VI)

For the enhanced emissions program, effective January 1, 1995, for businesses that operate nineteen or fewer vehicles and for private motor vehicles only of a model year 1968 and later required to be registered in the enhanced emissions program area, after any adjustments or repairs required pursuant to section 42-4-306, if total expenditures of at least four hundred fifty dollars have been made to bring the vehicle into compliance with applicable emissions standards and the vehicle does not meet such standards, a certification of emissions waiver shall be issued for such vehicle except as prescribed in subparagraph (XII) of this paragraph (d) pertaining to vehicle warranty. The four-hundred-fifty-dollar minimum expenditure may be adjusted annually by an amount not to exceed the percentage, if any, by which the consumer price index for all urban consumers (CPIU) for the Denver-Boulder metropolitan statistical area for the preceding year differs from such index for 1989. Vehicles that are owned by the state of Colorado or any agency or political subdivision thereof are not eligible for emissions-related repair waivers under this subparagraph (VI).

(VII)

Repealed.

(VIII)

Intentionally left blank —Ed.

(A)

For the enhanced emissions program except as provided in sub-subparagraph (B) of this subparagraph (VIII), for businesses that operate nineteen or fewer vehicles and for private motor vehicles only of a model year 1967 or earlier required to be registered in the enhanced emissions program area, after any adjustments or repairs required under section 42-4-306, if total expenditures of at least seventy-five dollars have been made to bring the vehicle into compliance with applicable emissions standards and the vehicle still does not meet the standards, a certification of emissions waiver shall be issued for the vehicle.

(B)

This subparagraph (VIII) shall apply in Boulder county, effective July 1, 1995.

(IX)

Intentionally left blank —Ed.

(A)

For the enhanced emissions program except as provided in sub-subparagraph (B) of this subparagraph (IX) effective January 1, 1995, for vehicles subject to a transient, loaded mode dynamometer inspection procedure under the enhanced program as determined by the commission, a certificate of waiver may be issued by an authorized state representative, if after failing a retest, at which point the minimum repair cost limit of four hundred fifty dollars has not been met, a complete and documented physical and functional diagnosis of the vehicle performed at an emissions technical center indicates that no additional emissions-related repairs would be effective or needed.

(B)

This subparagraph (IX) shall apply in Boulder county, effective July 1, 1995.

(X)

Subject to the provisions of subparagraph (V) of this paragraph (d), a certificate of emissions control shall not be issued for vehicles in the program area exhibiting smoke or indications of tampering with or poor maintenance of emissions control systems including on-board diagnostic systems.

(XI)

As used in this paragraph (d), “total expenditures” means those expenditures directly related to adjustment or repair of a motor vehicle to reduce exhaust or evaporative emissions to a level which complies with applicable emissions standards. The term does not include an inspection fee, or any costs of adjustment, repair, or replacement necessitated by the disconnection of, tampering with, or abuse of air pollution control equipment, improper fuel use, or visible smoke.

(XII)

No certification of emissions waiver shall be issued for vehicles not older than two years or which have not more than twenty-four thousand miles, or are of such other age and mileage as established for warranty protection under the federal act in accordance with the provisions and enforcement of section 207 (A) and (B) of the federal act relating to emissions control component and systems performance warranties.

(2)

Intentionally left blank —Ed.

(a)

The emissions inspection required under this section shall include an analysis of tail pipe and evaporative emissions. After January 1, 1994, such inspection shall include an analysis of emissions control equipment including on-board diagnostic systems, chlorofluorocarbons, and visible smoke emissions for the basic emissions program area and the enhanced emissions program area and emissions testing that meets the performance standards set by federal requirements for the enhanced emissions program area by means of procedures specified by regulation of the commission to determine whether the motor vehicle qualifies for issuance of a certification of emissions compliance. For motor vehicles of the model year 1975 or later, not tested under a transient load on a dynamometer, said inspection shall also include a visual inspection of emissions control equipment pursuant to rules of the commission.

(b)

and (c) Repealed.

(d)

Intentionally left blank —Ed.

(I)

In the basic emissions program area, effective January 1, 1994, in order to be issued a certificate of emissions waiver, appropriate adjustments and repairs must have been performed at a licensed inspection and readjustment station by a licensed emissions mechanic.

(II)

In the enhanced emissions program area, effective January 1, 1995, in order to be issued a certificate of emissions waiver, appropriate adjustments and repairs must have been performed by a technician at a registered repair facility within the enhanced emissions program area.

(III)

Adjustments and repairs performed by a registered repair facility and technician within the enhanced emissions program area shall be sufficient for compliance with the provisions of this paragraph (d) in the basic program area.

(3)

Intentionally left blank —Ed.

(a)

Effective July 1, 1993, any home rule city, city, town, or county shall, after holding a public hearing and receiving public comment and upon request by the governing body of such local government to the department of public health and environment and the department of revenue and after approval by the general assembly acting by bill pursuant to paragraph (e) of this subsection (3), be included in the program area established pursuant to sections 42-4-301 to 42-4-316. When such a request is made, said departments and governing body shall agree to a start-up date for the program in such area, and, on or after such date, all motor vehicles, as defined in section 42-4-304 (18), which are registered in the area shall be inspected and required to comply with the provisions of sections 42-4-301 to 42-4-316 and rules and regulations adopted pursuant thereto as if such area was included in the program area. Except as provided in paragraph (c) of this subsection (3), the department of public health and environment and the department of revenue, the executive director, and the commission shall perform all functions and exercise all powers related to the program in areas included in the program pursuant to this subsection (3) that they are otherwise required to perform under sections 42-4-301 to 42-4-316.

(b)

Effective July 1, 1993, notwithstanding the provisions of section 42-4-304 (20), a local government with jurisdiction over an area excluded from the program area pursuant to section 42-4-304 (20) may request inclusion in the program area, and the exclusion under section 42-4-304 (20) shall not apply to vehicles registered within such area.

(c)

Effective July 1, 1993, the inclusion pursuant to paragraph (a) or (b) of this subsection (3) of any home rule city, city, town, or county in the program area shall not be submitted to the United States environmental protection agency as a revision to the state implementation plan or otherwise included in such plan. Any governing body which requests inclusion of an area pursuant to paragraph (a) or (b) of this subsection (3) in the program area may, after a minimum period of five years, request termination of the program in such area, and the program in such area shall be terminated thirty days after the receipt by the department of revenue of such a request.

(d)

Effective January 1, 1994, except for those entities included within the program area pursuant to section 42-4-304 (20), for inclusion in the program area, any home rule city, city, town, or county shall have the basic emissions program test requirements and standards implemented as its emissions inspection program.

(e)

Unless a home rule city, city, town, or county violates national ambient air quality standards as established by the environmental protection agency, the inclusion pursuant to paragraph (a) or (b) of this subsection (3) of any home rule city, city, town, or county in the program area shall be contingent upon approval by the general assembly acting by bill to include any such home rule city, city, town, or county in the program area.

(4)

Intentionally left blank —Ed.

(a)

The seller of a motor vehicle that is inoperable or otherwise cannot be tested in accordance with rules promulgated by the department of revenue or that is being sold pursuant to part 18 or part 21 of this article is not required to obtain a certification of emissions control prior to the sale of the vehicle if the seller provides a written notice to the purchaser prior to completion of the sale that clearly indicates the following:

(I)

The vehicle does not currently comply with the emissions requirements for the program area;

(II)

The seller does not warrant that the vehicle will comply with emissions requirements; and

(III)

The purchaser is responsible for complying with emissions requirements prior to registering the vehicle in the emissions program area.

(b)

The department shall prepare a form to comply with the provisions of paragraph (a) of this subsection (4) and shall make such form available to dealers and other persons who are selling motor vehicles which are inoperable or otherwise cannot be tested in accordance with regulations promulgated by the department of revenue.

(c)

If a motor vehicle is exempted from the requirement for obtaining a certification of emissions control prior to sale pursuant to this subsection (4), the new owner of the motor vehicle is required to obtain a certification of emissions control for such motor vehicle before registering it in the program area.

(5)

Intentionally left blank —Ed.

(a)

Notwithstanding any other provision of this section, any eligible motor vehicle registered in a clean screen program county that complies with the requirements of the clean screen program under the provisions of sections 42-4-305 (12), 42-4-306 (23), and 42-4-307 (10.5)(a), by passing the requirements of such program and applicable rules shall be deemed to have complied with the inspection requirements of this section for the applicable emissions inspection cycle. For purposes of this subsection (5), “eligible motor vehicle” means a motor vehicle, including trucks, for model years 1978 and earlier having a gross vehicle weight rating of six thousand pounds or less and for model years 1979 and newer having a gross vehicle weight rating of eight thousand five hundred pounds or less.

(b)

Intentionally left blank —Ed.

(I)

If the commission does not specify a date for authorized agents in the basic emissions program area to begin collecting emissions inspection fees at the time of registration pursuant to section 42-3-304 (19)(a), or if the contractor determines that a motor vehicle required to be registered in the basic program area has complied with the inspection requirements pursuant to this subsection (5), a notice shall be sent to the owner of the vehicle identifying the owner of the vehicle, the license plate number, and other pertinent registration information, and stating that the vehicle has successfully complied with the applicable emission requirements. The notice must also include a notification that the registered owner of the vehicle may return the notice to the authorized agent with the payment as set forth on the notice to pay for the clean screen program. The receipt of the payment from the motor vehicle owner is notice that the motor vehicle has complied with the inspection requirements pursuant to this subsection (5).

(II)

For vehicles with registration renewals coming due on or after the dates specified by the commission for authorized agents to collect emissions inspection fees at the time of registration, if the contractor determines that a motor vehicle required to be registered in the program area has complied with the inspection requirements pursuant to this subsection (5), the contractor shall send a notice to the department of revenue identifying the owner of the vehicle, the license plate number, and any other pertinent registration information, stating that the vehicle has successfully complied with the applicable emission requirements.

(c)

The department shall, by contract with a private vendor or by rule, establish a procedure for a vehicle owner to obtain the necessary emissions-related documents for the registration and operation of a vehicle that has complied with the inspection requirements pursuant to this subsection (5).

Source: Section 42-4-310 — Periodic emissions control inspection required, https://leg.­colorado.­gov/sites/default/files/images/olls/crs2023-title-42.­pdf (accessed Oct. 20, 2023).

42‑4‑101
Short title
42‑4‑102
Legislative declaration
42‑4‑103
Scope and effect of article - exceptions to provisions
42‑4‑104
Adoption of traffic control manual
42‑4‑105
Local traffic control devices
42‑4‑106
Who may restrict right to use highways - definitions - rules
42‑4‑107
Obedience to police officers
42‑4‑108
Public officers to obey provisions - exceptions for emergency vehicles
42‑4‑109
Low-power scooters, animals, skis, skates, and toy vehicles on highways
42‑4‑109.5
Low-speed electric vehicles
42‑4‑109.6
Class B low-speed electric vehicles - effective date - rules
42‑4‑110
Provisions uniform throughout state - legislative declaration
42‑4‑110.5
Automated vehicle identification systems - legislative declaration - exceptions to liability - penalty - limits on use of photographs and video - definitions
42‑4‑111
Powers of local authorities
42‑4‑112
Noninterference with the rights of owners of realty
42‑4‑113
Appropriations for administration of article
42‑4‑114
Removal of traffic hazards
42‑4‑116
Restrictions for minor drivers - definitions
42‑4‑117
Personal mobility devices
42‑4‑118
Establishment of wildlife crossing zones - report
42‑4‑201
Obstruction of view or driving mechanism - hazardous situation
42‑4‑202
Unsafe vehicles - penalty - identification plates
42‑4‑203
Unsafe vehicles - spot inspections
42‑4‑204
When lighted lamps are required
42‑4‑205
Head lamps on motor vehicles - penalty
42‑4‑206
Tail lamps and reflectors - penalty
42‑4‑207
Clearance and identification
42‑4‑208
Stop lamps and turn signals - penalty
42‑4‑209
Lamp or flag on projecting load
42‑4‑210
Lamps on parked vehicles
42‑4‑211
Lamps on farm equipment and other vehicles and equipment
42‑4‑212
Spot lamps and auxiliary lamps
42‑4‑213
Audible and visual signals on emergency vehicles
42‑4‑214
Visual signals on service vehicles - rules - definition
42‑4‑215
Signal lamps and devices - additional lighting equipment
42‑4‑216
Multiple-beam road lights - penalty
42‑4‑217
Use of multiple-beam lights
42‑4‑218
Single-beam road-lighting equipment
42‑4‑219
Number of lamps permitted
42‑4‑220
Low-power scooters - lighting equipment - department control - use and operation
42‑4‑221
Bicycle, electric scooter, and personal mobility device equipment
42‑4‑222
Volunteer firefighters - volunteer ambulance attendants - special lights and alarm systems
42‑4‑223
Brakes - penalty
42‑4‑224
Horns or warning devices - definition
42‑4‑225
Mufflers - prevention of noise
42‑4‑226
Mirrors - exterior placements
42‑4‑227
Windows unobstructed - certain materials prohibited - windshield wiper requirements
42‑4‑228
Restrictions on tire equipment
42‑4‑229
Safety glazing material in motor vehicles
42‑4‑230
Emergency lighting equipment - who must carry
42‑4‑231
Parking lights
42‑4‑232
Minimum safety standards for motorcycles, autocycles, and low-power scooters
42‑4‑233
Alteration of suspension system
42‑4‑234
Slow-moving vehicles - display of emblem
42‑4‑235
Minimum standards for commercial vehicles - motor carrier safety fund - created - definitions - rules - penalties
42‑4‑236
Child restraint systems required - definitions - exemptions
42‑4‑237
Safety belt systems - mandatory use - exemptions - penalty - definitions
42‑4‑238
Blue and red lights - illegal use or possession
42‑4‑239
Misuse of a wireless telephone - definitions - penalty - preemption
42‑4‑240
Low-speed electric vehicle equipment requirements
42‑4‑241
Unlawful removal of tow-truck signage - unlawful usage of tow-truck signage - definition
42‑4‑242
Automated driving systems - safe harbor
42‑4‑301
Legislative declarations - enactment of enhanced emissions program not waiver of state right to challenge authority to require specific loaded mode transient dynamometer technology in automobile emissions testing
42‑4‑302
Commencement of basic emissions program - authority of commission
42‑4‑304
Definitions relating to motor vehicle inspection and readjustment program
42‑4‑305
Powers and duties of executive director - automobile inspection and readjustment program - basic emissions program - enhanced emissions program - clean screen program - rules
42‑4‑306
Powers and duties of commission - automobile inspection and readjustment program - basic emissions program - enhanced emissions program - clean screen program
42‑4‑307
Powers and duties of the department of public health and environment - division of administration - automobile inspection and readjustment program - basic emissions program - enhanced emissions program - clean screen program
42‑4‑307.5
Clean screen authority - enterprise - revenue bonds
42‑4‑307.7
Vehicle emissions testing - remote sensing
42‑4‑308
Inspection and readjustment stations - inspection-only facilities - fleet inspection stations - motor vehicle dealer test facilities - contractor - emissions inspectors - emissions mechanics - requirements
42‑4‑309
Vehicle fleet owners - motor vehicle dealers - authority to conduct inspections - fleet inspection stations - motor vehicle dealer test facilities - contracts with licensed inspection-only entities
42‑4‑310
Periodic emissions control inspection required
42‑4‑311
Operation of inspection and readjustment stations - inspection-only facilities - fleet inspection stations - motor vehicle dealer test facilities - enhanced inspection centers
42‑4‑312
Improper representation as emissions inspection and readjustment station - inspection-only facility - fleet inspection station - motor vehicle dealer test facility - enhanced inspection center
42‑4‑313
Penalties
42‑4‑314
Automobile emissions control systems - tampering - operation of vehicle
42‑4‑315
Warranties
42‑4‑316
AIR program - demonstration of compliance with ambient air quality standards and transportation conformity
42‑4‑316.5
Termination of vehicle emissions testing program
42‑4‑401
Definitions
42‑4‑402
Administration of inspection program
42‑4‑403
Powers and duties of the commission
42‑4‑404
Powers and duties of the executive director of the department of public health and environment
42‑4‑405
Powers and duties of executive director
42‑4‑406
Requirement of certification of emissions control for registration - testing for diesel smoke opacity compliance
42‑4‑407
Requirements for a diesel emission-opacity inspection - licensure as diesel emissions inspection station - licensure as emissions inspector
42‑4‑408
Operation of diesel inspection station
42‑4‑409
Improper representation of a diesel inspection station
42‑4‑410
Inclusion in the diesel inspection program
42‑4‑411
Applicability of this part to heavy-duty diesel fleets of nine or more
42‑4‑412
Air pollution violations
42‑4‑413
Visible emissions from diesel-powered motor vehicles unlawful - penalty
42‑4‑414
Heavy-duty diesel fleet inspection and maintenance program - penalty - rules
42‑4‑501
Size and weight violations - penalty
42‑4‑502
Width of vehicles
42‑4‑503
Projecting loads on passenger vehicles - penalty
42‑4‑504
Height and length of vehicles
42‑4‑505
Longer vehicle combinations - rules
42‑4‑506
Trailers and towed vehicles
42‑4‑507
Wheel and axle loads
42‑4‑508
Gross weight of vehicles and loads - definition
42‑4‑509
Vehicles weighed - excess removed
42‑4‑510
Permits for excess size and weight and for manufactured homes - rules - definitions
42‑4‑511
Permit standards - state and local
42‑4‑511.2
Authority for cooperative agreements with regional states on excess size or weight vehicles - regulations
42‑4‑512
Liability for damage to highway
42‑4‑601
Department to sign highways, where
42‑4‑602
Local traffic control devices
42‑4‑603
Obedience to official traffic control devices
42‑4‑604
Traffic control signal legend
42‑4‑605
Flashing signals
42‑4‑606
Display of unauthorized signs or devices
42‑4‑607
Interference with official devices
42‑4‑608
Signals by hand or signal device
42‑4‑609
Method of giving hand and arm signals
42‑4‑610
Unauthorized insignia
42‑4‑611
Paraplegic persons or persons with disabilities - distress flag
42‑4‑612
When signals are inoperative or malfunctioning - penalty
42‑4‑613
Failure to pay toll established by regional transportation authority
42‑4‑614
Designation of highway maintenance, repair, or construction zones - signs - increase in penalties for speeding violations
42‑4‑615
School zones - increase in penalties for moving traffic violations
42‑4‑616
Wildlife crossing zones - increase in penalties for moving traffic violations
42‑4‑617
Steep downhill grade zones - increase in penalties and surcharges for speeding violations - definitions
42‑4‑701
Vehicles approaching or entering intersection
42‑4‑702
Vehicle turning left
42‑4‑703
Entering through highway - stop or yield intersection
42‑4‑704
Vehicle entering roadway
42‑4‑705
Operation of vehicle approached by emergency vehicle - operation of vehicle approaching stationary emergency vehicle, stationary towing carrier vehicle, or stationary public utility service vehicle
42‑4‑706
Obedience to railroad signal
42‑4‑707
Certain vehicles must stop at railroad grade crossings - definitions
42‑4‑708
Moving heavy equipment at railroad grade crossing
42‑4‑709
Stop when traffic obstructed
42‑4‑710
Emerging from or entering alley, driveway, or building
42‑4‑711
Driving on mountain highways
42‑4‑712
Driving in highway work area
42‑4‑713
Yielding right-of-way to transit buses - definitions
42‑4‑714
Bicyclist or other authorized user in bicycle lane
42‑4‑715
Yielding right-of-way in roundabouts - definitions
42‑4‑801
Pedestrian obedience to traffic control devices and traffic regulations
42‑4‑802
Pedestrians’ right-of-way in crosswalks
42‑4‑803
Crossing at other than crosswalks
42‑4‑805
Pedestrians walking or traveling in a wheelchair on highways
42‑4‑806
Driving through safety zone prohibited
42‑4‑807
Drivers to exercise due care
42‑4‑808
Drivers and pedestrians, other than persons in wheelchairs, to yield to individuals with disabilities
42‑4‑901
Required position and method of turning
42‑4‑902
Limitations on turning around
42‑4‑903
Turning movements and required signals
42‑4‑1001
Drive on right side - exceptions
42‑4‑1002
Passing oncoming vehicles
42‑4‑1003
Overtaking a vehicle on the left
42‑4‑1004
When overtaking on the right is permitted
42‑4‑1005
Limitations on overtaking on the left
42‑4‑1006
One-way roadways and rotary traffic islands
42‑4‑1007
Driving on roadways laned for traffic
42‑4‑1008
Following too closely
42‑4‑1008.5
Crowding or threatening bicyclist
42‑4‑1009
Coasting prohibited
42‑4‑1010
Driving on divided or controlled-access highways
42‑4‑1011
Use of runaway vehicle ramps
42‑4‑1012
High occupancy vehicle (HOV) and high occupancy toll (HOT) lanes - penalty
42‑4‑1013
Passing lane - definitions - penalty
42‑4‑1101
Speed limits
42‑4‑1102
Altering of speed limits - department to study rural state highways and increase speed limits - definitions
42‑4‑1103
Minimum speed regulation
42‑4‑1104
Speed limits on elevated structures
42‑4‑1105
Speed contests - speed exhibitions - aiding and facilitating - immobilization of motor vehicle - definitions
42‑4‑1106
Minimum speed in left lane - interstate 70
42‑4‑1201
Starting parked vehicle
42‑4‑1202
Parking or abandonment of vehicles
42‑4‑1203
Ski areas to install signs
42‑4‑1204
Stopping, standing, or parking prohibited in specified places - penalty
42‑4‑1205
Parking at curb or edge of roadway
42‑4‑1206
Unattended motor vehicle - definitions
42‑4‑1207
Opening and closing vehicle doors
42‑4‑1208
Reserved parking for persons with disabilities - applicability - rules
42‑4‑1209
Owner liability for parking violations
42‑4‑1210
Designated areas on private property for authorized vehicles
42‑4‑1211
Limitations on backing
42‑4‑1212
Pay parking access for persons with disabilities
42‑4‑1213
Parking in electric motor vehicle charging stations - definition
42‑4‑1301
Driving under the influence - driving while impaired - driving with excessive alcoholic content - definitions - penalties
42‑4‑1301.1
Expressed consent for the taking of blood, breath, urine, or saliva sample - testing - fund - rules - repeal
42‑4‑1301.3
Alcohol and drug driving safety program - definition
42‑4‑1301.4
Useful public service - definitions - local programs - assessment of costs
42‑4‑1302
Stopping of suspect
42‑4‑1303
Records - prima facie proof
42‑4‑1304
Samples of blood or other bodily substance - duties of department of public health and environment - rules
42‑4‑1305
Open alcoholic beverage container - motor vehicle - prohibited
42‑4‑1305.5
Open marijuana container - motor vehicle - prohibited
42‑4‑1306
Colorado task force on drunk and impaired driving - creation - legislative declaration
42‑4‑1307
Penalties for traffic offenses involving alcohol and drugs - legislative declaration - definitions - repeal
42‑4‑1308
Study of devices capable of assessing drug impairment of motorists - report - definition - repeal
42‑4‑1401
Reckless driving - penalty
42‑4‑1402
Careless driving - penalty
42‑4‑1402.5
Vulnerable road user - prohibition - violations and penalties - definition
42‑4‑1403
Following fire apparatus prohibited
42‑4‑1404
Crossing fire hose
42‑4‑1405
Riding in trailers
42‑4‑1406
Foreign matter on highway prohibited - penalty - definitions
42‑4‑1407
Spilling loads on highways prohibited - prevention of spilling of aggregate, trash, or recyclables
42‑4‑1407.5
Splash guards - when required - definition
42‑4‑1408
Operation of motor vehicles on property under control of or owned by parks and recreation districts
42‑4‑1409
Compulsory insurance - penalty - legislative intent
42‑4‑1410
Proof of financial responsibility required - suspension of license
42‑4‑1410.5
Providing false evidence of proof of motor vehicle insurance - penalty
42‑4‑1411
Use of earphones while driving
42‑4‑1412
Operation of bicycles, electric scooters, and other human-powered vehicles
42‑4‑1412.5
Statewide regulation of certain persons approaching intersections who are not operating motor vehicles - status of existing local ordinance or resolution - legislative declaration - definitions
42‑4‑1413
Eluding or attempting to elude a police officer
42‑4‑1414
Use of dyed fuel on highways prohibited
42‑4‑1415
Radar jamming devices prohibited - penalty
42‑4‑1416
Failure to present a valid transit pass or coupon - fare inspector authorization - definitions
42‑4‑1501
Traffic laws apply to persons operating motorcycles and autocycles - special permits
42‑4‑1502
Motorcycles and autocycles - protective helmet
42‑4‑1503
Operating motorcycles and autocycles on roadways laned for traffic
42‑4‑1504
Clinging to other vehicles - penalty
42‑4‑1601
Accidents involving death or personal injuries - duties
42‑4‑1602
Accident involving damage - duty
42‑4‑1603
Duty to give notice, information, and aid
42‑4‑1604
Duty upon striking unattended vehicle or other property
42‑4‑1605
Duty upon striking highway fixtures or traffic control devices
42‑4‑1606
Duty to report accidents
42‑4‑1607
When driver unable to give notice or make written report
42‑4‑1608
Accident report forms
42‑4‑1609
Coroners to report
42‑4‑1610
Reports by interested parties confidential
42‑4‑1611
Tabulation and analysis of reports
42‑4‑1612
Accidents in state highway work areas
42‑4‑1701
Traffic offenses and infractions classified - penalties - penalty and surcharge schedule - repeal
42‑4‑1702
Alcohol- or drug-related traffic offenses - collateral attack
42‑4‑1703
Parties to a crime
42‑4‑1704
Offenses by persons controlling vehicles
42‑4‑1705
Person arrested to be taken before the proper court
42‑4‑1706
Juveniles - convicted - arrested and incarcerated - provisions for confinement
42‑4‑1707
Summons and complaint or penalty assessment notice for misdemeanors, petty offenses, and misdemeanor traffic offenses - release - registration
42‑4‑1708
Traffic infractions - proper court for hearing, burden of proof - appeal - collateral attack
42‑4‑1709
Penalty assessment notice for traffic infractions - violations of provisions by officer - driver’s license - definition
42‑4‑1710
Failure to pay penalty for traffic infractions - failure of parent or guardian to sign penalty assessment notice - procedures
42‑4‑1711
Compliance with appearance
42‑4‑1712
Procedure prescribed not exclusive
42‑4‑1713
Conviction record inadmissible in civil action
42‑4‑1714
Traffic violation not to affect credibility of witness
42‑4‑1715
Convictions, judgments, and charges recorded - public inspection
42‑4‑1716
Notice to appear or pay fine - failure to appear - penalty - definition
42‑4‑1717
Conviction - attendance at driver improvement school - rules
42‑4‑1718
Electronic transmission of data - standards
42‑4‑1719
Violations - commercial driver’s license - compliance with federal regulation
42‑4‑1801
Legislative declaration
42‑4‑1802
Definitions
42‑4‑1803
Abandonment of motor vehicles - public property
42‑4‑1804
Report of abandoned motor vehicles - owner’s opportunity to request hearing
42‑4‑1805
Appraisal of abandoned motor vehicles - sale
42‑4‑1806
Liens upon towed motor vehicles
42‑4‑1807
Perfection of lien
42‑4‑1808
Foreclosure of lien
42‑4‑1809
Proceeds of sale
42‑4‑1810
Transfer and purge of certificates of title
42‑4‑1811
Penalty
42‑4‑1812
Exemptions
42‑4‑1813
Local regulations
42‑4‑1814
Violation of motor vehicle registration or inspection laws - separate statutory provision
42‑4‑1901
School buses - equipped with supplementary brake retarders
42‑4‑1902
School vehicle drivers - special training required
42‑4‑1903
School buses - stops - signs - passing
42‑4‑1904
Regulations for school buses - regulations on discharge of passengers - penalty - exception - definition
42‑4‑2001
Maximum hours of service - ready-mix concrete truck operators
42‑4‑2101
Legislative declaration
42‑4‑2102
Definitions
42‑4‑2103
Abandonment and nonconsensual towing of motor vehicles - private property - rules
42‑4‑2104
Appraisal of abandoned motor vehicles - sale
42‑4‑2105
Liens upon towed motor vehicles
42‑4‑2106
Perfection of lien
42‑4‑2107
Sale of abandoned vehicle
42‑4‑2108
Proceeds of sale
42‑4‑2109
Transfer and purge of certificates of title
42‑4‑2110
Penalty
42‑4‑2201
Definitions
42‑4‑2202
Transfer for recycling
42‑4‑2203
Vehicle verification system - fees - rules
42‑4‑2204
Theft discovered - duties - liability
42‑4‑2301
Comprehensive education
42‑4‑2401
Definitions
42‑4‑2402
Event data recorders
42‑4‑2403
Applicability
42‑4‑2501
Educational materials - updating of driving manual
Green check means up to date. Up to date

Current through Fall 2024

§ 42-4-310’s source at colorado​.gov