# 2 CCR 601-8: RULES GOVERNING THE USE OF TUNNELS ON COLORADO STATE HIGHWAYS

> Colorado · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/STATE_CO_CCR_2_CCR_601_8

## Section

- **Citation:** 2 CCR 601-8
- **Heading:** RULES GOVERNING THE USE OF TUNNELS ON COLORADO STATE HIGHWAYS
- **Jurisdiction:** Colorado
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** August 14, 2026
- **Source:** Compiled text
- **Location:** Code of Colorado Regulations / 600 Department of Transportation / 601 Transportation Commission and Office of Transportation Safety / 2 CCR 601-8

## Text

_________________________________________________________________________
Statement of Basis and Purpose and Statutory Authority
The Transportation Commission has revised the Rules Governing the Use of tunnels on State Highways
in order to update state and federal statutory references, clarify and simplify language, and provide an
easily understandable guide for use of the tunnels on state highways and specifically the Eisenhower-
Johnson Memorial Tunnels. Section 42-4-106(7)(a), C.R.S., provides the Transportation Commission with
authority to adopt rules concerning the operation of any motor vehicle and commercial vehicle in any
tunnel which is a part of the state highway system. Pursuant to § 42-4-106(7)(b), C.R.S., the Department
may prohibit or regulate the operation of any motor vehicle and commercial vehicle which transports any
article, deemed to be dangerous, in any tunnel which is part of the state highway system. Further, § 42-
20-301(3), C.R.S., provides authority to the Transportation Commission to regulate hours of operation of
the Eisenhower-Johnson Memorial Tunnels on Interstate 70.
These rules shall be interpreted consistently with the requirements of Title 49 CFR parts 100 to 177.
Additionally, these rules should be read together with 8 CCR 1507-25 "Rules and Regulations Concerning
the Permitting, Routing & Transportation of Hazardous and Nuclear Materials and the Intrastate
Transportation of Agricultural Products in the State of Colorado." These rules are promulgated by the
Department of Public Safety, Chief of the Colorado State Patrol pursuant to § 42-20-108 (1) and (2),
C.R.S. These rules also regulate the safe transportation of nuclear materials by motor vehicle within the
State of Colorado pursuant to
§ §42-20-403, 504 and 508, C.R.S., and exempt agricultural products from the rules pursuant to § 42-20-
108.5, C.R.S.
The transport of hazardous materials is strictly governed by federal and state regulations and CDOT must
adhere to these legal requirements
d (2),
C.R.S. These rules also regulate the safe transportation of nuclear materials by motor vehicle within the
State of Colorado pursuant to
§ §42-20-403, 504 and 508, C.R.S., and exempt agricultural products from the rules pursuant to § 42-20-
108.5, C.R.S.
The transport of hazardous materials is strictly governed by federal and state regulations and CDOT must
adhere to these legal requirements. CDOT’s Rules 3.03 and 3.04 are based on federal regulations which
CDOT has no authority to modify.
Applicability. These rules apply to all Commercial Vehicles, Motor Vehicles and Persons utilizing the
tunnels under the Colorado Department of Transportation’s jurisdiction.

Code of Colorado Regulations
Secretary of State
State of Colorado

1.00
Definitions
1.01
"Commercial Vehicle" as set forth in § 42-4-235, C.R.S., shall mean (I) any self-propelled or
towed vehicle bearing an apportioned plate or having a manufacturer's gross vehicle weight
rating or gross combination rating of ten thousand one pounds or more, which vehicle is used in
commerce on the public highways of this state or is designed to transport sixteen or more
passengers, including the driver, unless such vehicle is a school bus regulated pursuant to
section 42-4-1904, C.R.S., or any vehicle that does not have a gross vehicle weight rating of
twenty-six thousand one or more pounds and that is owned or operated by a school district so
long as such school district does not receive remuneration for the use of such vehicle, not
including reimbursement for the use of such vehicle; (II) any motor vehicle designed or equipped
to transport other motor vehicles from place to place by means of winches, cables, pulleys, or
other equipment for towing, pulling, or lifting, when such motor vehicle is used in commerce on
the public highways of this state; and (III) a motor vehicle that is used on the public highways and
transports materials determined by the secretary of transportation to be hazardous under 49
U.S.C. Sec
ipped
to transport other motor vehicles from place to place by means of winches, cables, pulleys, or
other equipment for towing, pulling, or lifting, when such motor vehicle is used in commerce on
the public highways of this state; and (III) a motor vehicle that is used on the public highways and
transports materials determined by the secretary of transportation to be hazardous under 49
U.S.C. Sec. 5103 in such quantities as to require placarding under 49 CFR parts 172 and 173.
1.02
"Department" or "CDOT" shall mean the Colorado Department of Transportation established
pursuant to § 43-1-103, C.R.S.
1.03
"Enforcement Official" shall mean, and is limited to, a peace officer who is an officer of the
Colorado State Patrol as described in § § 16-2.5-101 and 114, C.R.S., a certified peace officer
who is a certified port of entry officer as described in § § 16-2.5-101 and 115, C.R.S., a peace
officer who is an investigating official of the transportation section of the public utilities
commission as described in § § 16-2.5-101 and 143, C.R.S., or any other peace officer as
described in section § 16-2.5-101, C.R.S. [ § 42-20-103 (2), C.R.S.]
1.04
"Hazardous Materials" (also known as "Hazmat") shall mean those materials listed in Tables 1
and 2 of 49 CFR 172.504, excluding highway route controlled quantities of radioactive materials
as defined in 49 CFR 173.403 (l), excluding ores, the products from mining, milling, smelting, and
similar processing of ores, and the wastes and tailing therefrom, and excluding special fireworks
when the aggregate amount of flash powder does not exceed fifty pounds. [§ 42-20-103 (3),
C.R.S.]
1.05
"Motor vehicle" shall mean any self-propelled vehicle that is designed primarily for travel on the
public highways and that is generally and commonly used to transport persons and property over
the public highways or a low-speed electric vehicle; except that the term does not include low-
power scooters, wheelchairs, or vehicles moved solely by human power
ty pounds. [§ 42-20-103 (3),
C.R.S.]
1.05
"Motor vehicle" shall mean any self-propelled vehicle that is designed primarily for travel on the
public highways and that is generally and commonly used to transport persons and property over
the public highways or a low-speed electric vehicle; except that the term does not include low-
power scooters, wheelchairs, or vehicles moved solely by human power.
1.06
"Person" shall mean an individual, a corporation, a government or governmental subdivision or
agency, a partnership, an association, or any other legal entity; except that separate divisions of
the same corporation may, at their request, be treated as separate persons. [§ 42-20-103 (6),
C.R.S.]
1.07
"Staging" shall mean the parking of a Motor Vehicle or Commercial Vehicle at a specific location
to facilitate its safe passage through the Eisenhower-Johnson Memorial Tunnel according to the
specific timing requirements of Rule 3.05
1.08
"State Highway" shall consist of the federal-aid primary roads, the federal-aid secondary roads,
and the interstate system, including extensions thereof within urban areas. [§ 43-2-201(1),
C.R.S.]

1.09
"Tunnel" shall mean enclosed roadways with vehicle access that is restricted to portals
regardless of type of structure or method of construction. Tunnels do not include highway bridges,
railroad bridges or other bridges over a roadway. Tunnels are structures that require special
design considerations that may include lighting, ventilation, fire protection systems, and
emergency egress capacity based on the owners’ determination.
2.00
General Requirements for Use of All CDOT Tunnels
2.01
These Rules apply to all facilities identified below in Rule 4.00.
2.02
Any Person operating a Motor Vehicle or Commercial Vehicle in any Tunnel on the State
Highway System shall comply with all governing state and federal law and regulations. Any Motor
Vehicle, Commercial Vehicle or Person failing to abide by all applicable law and regulations will
be referred to law Enforcement Officials
ls
2.01
These Rules apply to all facilities identified below in Rule 4.00.
2.02
Any Person operating a Motor Vehicle or Commercial Vehicle in any Tunnel on the State
Highway System shall comply with all governing state and federal law and regulations. Any Motor
Vehicle, Commercial Vehicle or Person failing to abide by all applicable law and regulations will
be referred to law Enforcement Officials. No Person shall obstruct, harass, impair, attempt to
influence, or otherwise interrupt the official government functions of the CDOT Tunnel staff. In the
event such actions should occur the appropriate law enforcement agency will be contacted
immediately.
2.03
CDOT, including Tunnel Personnel, may prohibit any Motor Vehicle or Commercial Vehicle or
device, pursuant to § 42-4-106 (7), C.R.S., from using a Tunnel when the health or safety of the
public warrants such action.
2.04
Pedestrians shall not be permitted in Tunnels without the express permission of the Department.
2.05
Electrical assisted bicycles, electric personal assistive mobility devices, low-power scooters, low-
speed electric vehicles, motor driven cycles, motorcycles, or motor scooters, with a motor which
produces five (5) horsepower or less, and bicycles or other means of conveyance are prohibited
from using any Tunnel unless a special use permit has been granted by the Colorado State
Patrol. [ § 42-1-102, (28.5) (28.7) (48.5)(a), and (48.6), C.R.S.]
2.06
The Department shall be authorized to schedule any closure of a segment of the State Highway
system or at the request of the Colorado State Patrol in order to provide for the safety of the
public and including but not limited to maintenance operations, avalanche control, rock fall
mitigation, and roadway construction
ado State
Patrol. [ § 42-1-102, (28.5) (28.7) (48.5)(a), and (48.6), C.R.S.]
2.06
The Department shall be authorized to schedule any closure of a segment of the State Highway
system or at the request of the Colorado State Patrol in order to provide for the safety of the
public and including but not limited to maintenance operations, avalanche control, rock fall
mitigation, and roadway construction. The CDOT Maintenance Superintendent or his/her
designee, in consultation with the CDOT Regional Transportation Director and the CDOT Director
of Transportation Systems Management & Operations,, may exercise discretion related to the use
of CDOT Tunnels as specified in these rules to address traffic mitigation or to provide for the
health, safety and welfare of the public.
3.00
Requirements Specific to the Eisenhower-Johnson Memorial Tunnels (EJMT)
3.01
CDOT Personnel at the EJMT shall have the authority to:
A.
Direct Motor Vehicles or Commercial Vehicles to staging/parking areas and enlist the
assistance of an Enforcement Official to review shipping papers or their equivalent to
protect the health, safety and welfare of the public.
B.
Establish and post restricted access requirements (e.g., speed limit reductions, convoy
escort operations, vehicle convoys, and Tunnel closures) granting or denying highway
and/or Eisenhower-Johnson Memorial Tunnels (EJMT) access, when access would
present a hazard to the Tunnels or to persons using the Tunnels.

3.02
All Commercial Vehicles, Motor Vehicles and Persons transporting placarded quantities of
hazardous materials are required to use Loveland Pass (US 6) when the Pass is open.
3.03
Commercial Vehicles, Motor Vehicles and Persons are prohibited at all times from transporting
the following placarded hazardous materials through the EJMT, and may not park in the parking
lots outside of EJMT.

PROHIBITED AT ALL TIMES FROM EJMT

Division 1.1 Placard
Explosives With a Mass Explosion Hazard

Division 1.2 Placard
Explosives With a Projection Hazard
(US 6) when the Pass is open.
3.03
Commercial Vehicles, Motor Vehicles and Persons are prohibited at all times from transporting
the following placarded hazardous materials through the EJMT, and may not park in the parking
lots outside of EJMT.

PROHIBITED AT ALL TIMES FROM EJMT

Division 1.1 Placard
Explosives With a Mass Explosion Hazard

Division 1.2 Placard
Explosives With a Projection Hazard

Division 1.3 Placard
Explosives With Predominantly a Fire Hazard

Division 1.4 Placard
Explosives With No Significant Blast Hazard

Division 1.5 Placard
Very Insensitive Explosives: Blasting Agents

Division 4.3 Placard
Dangerous When Wet Materials

PROHIBITED AT ALL TIMES FROM EJMT
Division 5.2 Placard
Organic Peroxides
Division 2.3
Inhalation Hazard

Division 6.1 Placard
Poisonous Materials
(inhalation hazards only)

The HRCQ placard has the square background
behind the point on point placard. Compare Class 7
Placard Radioactive Materials under Rule 3.04.
Highway Route-Controlled Quantity
(HRCQ)
.
3.04
Materials Permitted to Use EJMT when Loveland Pass (US 6) is closed. Subject to the
requirements of these rules and all state and federal laws, Commercial Vehicles, Motor Vehicles
and Persons may transport the following hazardous materials through the EJMT only when
Loveland Pass (US 6) is closed.

PERMITTED TO USE EJMT WHEN LOVELAND PASS (US 6) IS CLOSED
SUBJECT TO RESTRICTION
Division 1.6 Placard
Extremely Insensitive Detonating
Substances

This is a point-on-point placard as distinguished
from HRCQ placard which has a square
background. HRCQ is prohibited at all times.
Class 7 Placard
Radioactive Materials

Division 2.1 Placard
Flammable Gases

Division 2.2 Placards
Non-Flammable, Non Poisonous Gases

Class 3 Placards
Flammable Liquids
Class 3 Placards
Combustible Liquids

PERMITTED TO USE EJMT WHEN LOVELAND PASS (US 6) IS CLOSED
SUBJECT TO RESTRICTION
Division 4.1 Placard
Flammable Solids

Division 4.2 Placard
Spontaneously Combustible Materials
d at all times.
Class 7 Placard
Radioactive Materials

Division 2.1 Placard
Flammable Gases

Division 2.2 Placards
Non-Flammable, Non Poisonous Gases

Class 3 Placards
Flammable Liquids
Class 3 Placards
Combustible Liquids

PERMITTED TO USE EJMT WHEN LOVELAND PASS (US 6) IS CLOSED
SUBJECT TO RESTRICTION
Division 4.1 Placard
Flammable Solids

Division 4.2 Placard
Spontaneously Combustible Materials

Division 5.1 Placard
Oxidizing Substances
Division 6.1 Placards
Poisonous or Toxic Materials (excludes
inhalation hazards)

Division 6.2 Label
Infectious Substances

Class 8 Placard
Corrosive Substances

Class 9 Placard
Miscellaneous Hazardous Materials

PERMITTED TO USE EJMT WHEN LOVELAND PASS (US 6) IS CLOSED
SUBJECT TO RESTRICTION

Dangerous Placard
Dangerous Hazardous Materials

ORM-D Label
Other Regulated Materials
3.05
Restrictions on Placarded Loads Carrying Hazardous Materials when Loveland Pass (US 6) is
Closed.
A.
Peak Period Operations. Peak Periods are those times of increased vehicle traffic
determined by the Department to warrant restrictions on the transporting of placarded
quantities of permitted hazardous materials.
1.
No vehicles containing placarded quantities of hazardous materials are allowed
to use EJMT during the following time frames:
Westbound
Saturday and Sunday mornings, from 7:01 a.m. to 9:59 a.m.
National Holidays when they fall on a Monday or Friday from 7:01 a.m. to
9:59 a.m.
Eastbound
Sunday afternoons, from 2:01 p.m. to 6:59 p.m.
National Holidays when they fall on a Monday or Friday, from 2:01 p.m.
to 6:59 p.m.
Special Provisions for New Years Day and Christmas Day.
The day preceding and the day following the holiday may be included in
the Peak Period restrictions. When Christmas Day or New Years’ Day
fall on a weekday, Peak Period restrictions may include Friday and
Saturday eastbound.
2.
National Holidays for purposes of these Rules are: New Year’s Day (January 1);
Martin Luther King, Jr
.
to 6:59 p.m.
Special Provisions for New Years Day and Christmas Day.
The day preceding and the day following the holiday may be included in
the Peak Period restrictions. When Christmas Day or New Years’ Day
fall on a weekday, Peak Period restrictions may include Friday and
Saturday eastbound.
2.
National Holidays for purposes of these Rules are: New Year’s Day (January 1);
Martin Luther King, Jr. Day (3rd Monday of January); President’s Day (3rd
Monday in February); Memorial Day (last Monday in May); Independence Day
(July 4); Labor Day (1st Monday in September); Thanksgiving Day (4th Thursday
in November) and Christmas Day (December 25).

3.
CDOT will provide real-time information specific to Commercial Motor Vehicles
including placarded loads carrying Hazardous Materials, on Interstate 70 with
details including road conditions, Loveland Pass closures, Hazmat holds at
EJMT, and forecasts of Peak Period travel delays. When feasible, CDOT may
route placarded quantities of hazardous materials through the EJMT during
significant gaps in traffic when Loveland Pass (US 6) is closed during Peak
Period restrictions.
4.
Loads carrying Placarded quantities of Hazardous Materials will be allowed to
Stage outside of the 300 foot restriction to the EJMT and at least 5 feet from the
State Highway in designated parking spaces. After these spaces are filled,
Persons, Motor Carriers and Commercial Vehicles may use Herman’s Gulch
(Exit 218), Officer’s Gulch (Exit 198) or other rest areas to Stage pending
notification from CDOT Tunnel personnel that access is permitted.
B.
Off-Peak Period Operations when Loveland Pass (US 6) is Closed. Once authorization
and specific direction is given by CDOT personnel, Motor Vehicles, Commercial Vehicles
and Persons transporting placarded quantities of Hazardous Materials under this Rule
may use the EJMT:
1.
Seven days a week on the hour; and
2.
Between the hours of 11 p.m. and 6 a.m. on the half hour
that access is permitted.
B.
Off-Peak Period Operations when Loveland Pass (US 6) is Closed. Once authorization
and specific direction is given by CDOT personnel, Motor Vehicles, Commercial Vehicles
and Persons transporting placarded quantities of Hazardous Materials under this Rule
may use the EJMT:
1.
Seven days a week on the hour; and
2.
Between the hours of 11 p.m. and 6 a.m. on the half hour.
3.06
All Motor Vehicles, Commercial Vehicles and Persons transporting authorized Hazardous
Materials through the EJMT shall:
Travel at speeds no faster than 30 miles per hour;
Not pass other vehicles; and
Maintain a minimum distance of 800 feet from other vehicles.
3.07
Hazmat Routes
3.07.1 The EJMT is not located on a designated hazardous materials route section. The
designated hazardous materials routes within the State of Colorado may be found at
http://dtdapps.coloradodot.info/staticdata/Downloads/StatewideMaps/HazMatMap.pdf.
See also http://www.coloradodot.info/business/hazmat-routing.

4.00
CDOT Tunnels and Snow Sheds
Structure
No.
Tunnel Name &
Location
Description
Route
Mile Post
NHS (Y/N)
H-03-BT
Interstate 70, MP
50.38, Beavertail
Tunnels
Bore 13.75 miles east of Grand
Junction in DeBeque Canyon
070A
50.38
Y
H-03-BU
Interstate 70, MP
50.38, Beavertail
Tunnels
Bore 13.75 miles east of Grand
Junction in DeBeque Canyon
070A
50.37
Y
F-07-Q
Interstate 70, MP
117.83, No Name
Tunnels
Bores 1.5 miles East of SH 82-
Grand Ave., Glenwood Springs
070A
117.81
Y
F-07-R
Interstate 70, MP
117.83, No Name
Tunnels
Bores 1.5 miles East of SH 82-
Grand Ave., Glenwood Springs
070A
117.8
Y
F-08-AP
Interstate 70, MP
125.7, Hanging Lake
Tunnels
Glenwood Canyon, 8.1 miles
east of Glenwood Springs
070A
125.23
Y
F-08-AQ
Interstate 70, MP
125.7, Hanging Lake
Tunnels
Bores, Glenwood Canyon, 8.1
miles east of Glenwood Springs
070A
125.24
Y
F-08-AT
Interstate 70, MP
127.12 Reverse
Curve
One bore West bound only,
10.5 miles east of Glenwood
Springs
070A
127.09
Y
F-13-X
Interstate 70, MP
213, Eisenhower/
Johnson Memorial
Tunnels
Bores, unde
nnels
Glenwood Canyon, 8.1 miles
east of Glenwood Springs
070A
125.23
Y
F-08-AQ
Interstate 70, MP
125.7, Hanging Lake
Tunnels
Bores, Glenwood Canyon, 8.1
miles east of Glenwood Springs
070A
125.24
Y
F-08-AT
Interstate 70, MP
127.12 Reverse
Curve
One bore West bound only,
10.5 miles east of Glenwood
Springs
070A
127.09
Y
F-13-X
Interstate 70, MP
213, Eisenhower/
Johnson Memorial
Tunnels
Bores, under the Continental
Divide, 60 miles west of Denver
070A
213.61
Y
F-13-Y
Interstate 70, MP
213, Eisenhower/
Johnson Memorial
Tunnels
Bores, under the Continental
Divide, 60 miles west of Denver
070A
213.61
Y
F-15-BN
Interstate 70, MP
242, Twin Tunnels
One bore each Tunnel, within
the city limits of Idaho Springs
(2.6 miles east of junction with
SH 103)
070A
242.11
Y
F-15-BO
Interstate 70, MP
242, Twin tunnels
One bore each Tunnel, within
the city limits of Idaho Springs
(2.6 miles east of junction with
SH 103)
070A
242.11
Y
F-17-FW
Interstate 225 MP
0.02 at Junction.
with Interstate-25
SB MP 200
Cut and cover Structure,
Junction I-225 Southbound only
with Interstate 25 Southbound
only
225A

F-15-AW
US 6 - MP259 to
270,
One bore each Tunnel, Five
Tunnels in Clear Creek Canyon
beginning 4 miles west of
Golden for 15 miles
006G
264.76
N

Structure
No.
Tunnel Name &
Location
Description
Route
Mile Post
NHS (Y/N)
F-15-AX
US 6 - MP259 to
270,
One bore each Tunnel, Five
Tunnels in Clear Creek Canyon
beginning 4 miles west of
Golden for 15 miles
006G
265.13
N
F-15-AY
US 6 - MP259 to
270,
One bore each Tunnel, Five
Tunnels in Clear Creek Canyon
beginning 4 miles west of
Golden for 15 miles
006G
270.37
N
F-15-X
US 6 - MP259 to
270,
One bore each Tunnel, Five
Tunnels in Clear Creek Canyon
beginning 4 miles west of
Golden for 15 miles
006G
258.94
N
F-15-Y
US 6 - MP259 to
270,
One bore each Tunnel, Five
Tunnels in Clear Creek Canyon
beginning 4 miles west of
Golden for 15 miles
006G
259.46
N
N-09-F
US160 - MP 174.8
Wolf Creek Pass
Tunnel
One bore, 31.15 miles east of
Pagosa Springs (located on
west side of Wolf Creek Pass)
160A
174.19
each Tunnel, Five
Tunnels in Clear Creek Canyon
beginning 4 miles west of
Golden for 15 miles
006G
258.94
N
F-15-Y
US 6 - MP259 to
270,
One bore each Tunnel, Five
Tunnels in Clear Creek Canyon
beginning 4 miles west of
Golden for 15 miles
006G
259.46
N
N-09-F
US160 - MP 174.8
Wolf Creek Pass
Tunnel
One bore, 31.15 miles east of
Pagosa Springs (located on
west side of Wolf Creek Pass)
160A
174.19
Y
L-06-P
US 550 - MP 90.86
Bear Creek Tunnel
One bore, 1.2 miles south of
Ouray in Ouray county
550B
90.84
Y
B-15-E
SH 14 - MP 107.2
One bore, 27.48 miles west of
Fort Collins in Roosevelt
National Forest
014B
107.23
N
D-15-AS
SH 119 - MP 37.6
One bore, in Boulder Canyon,
4.2 miles west of Junction with
SH 7 & SH 93
119A
37.69
N
M-06-AG
US 550 – MP 88.16
East Riverside Snow
Shed
Snow Shed
550B
88.16
Y
O-09-K
US 160 – MP
168.47 Alberta
Snow Shed
Snow Shed
160A
168.47
Y
5.00
Materials Incorporated by Reference
Copies of these Rules and of all other incorporated materials are available for public inspection during
regular business hours at the Colorado Department of Transportation, Office of Policy and Government
Relations, 4201 East Arkansas Avenue, Denver, Colorado 80222. Incorporated materials are also
maintained at the State Publications Depository and Distribution Center, 201 East Colfax Avenue,
Denver, Colorado 80203, and may be examined at any other state publications library via inter-library
loan. The following regulations and materials are incorporated by reference; such incorporation does not
include later amendments or editions of any incorporated material: Title 49 CFR parts 100 to 177, and 8
CCR 1507-25 “Rules and Regulations Concerning the Permitting, Routing & Transportation of Hazardous
and Nuclear Materials and the Intrastate Transportation of Agricultural Products in the State of Colorado”
dated 4.30.2013.

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- [2 CCR 601-21 LAW ENFORCEMENT ASSISTANCE FUND (LEAF)](https://www.frixlaw.com/law-library/statutes/STATE_CO_CCR_2_CCR_601_21.md)
- [2 CCR 601-22 RULES GOVERNING STATEWIDE TRANSPORTATION PLANNING PROCESS AND TRANSPORTATION PLANNING REGIONS](https://www.frixlaw.com/law-library/statutes/STATE_CO_CCR_2_CCR_601_22.md)
- [2 CCR 601-23 RULES GOVERNING THE MOTORCYCLE OPERATOR SAFETY TRAINING (MOST) PROGRAM [Repealed eff. 09/30/2018]](https://www.frixlaw.com/law-library/statutes/STATE_CO_CCR_2_CCR_601_23.md)
- [2 CCR 601-24 RULE GOVERNING COMMERCIAL FOOD TRUCK OPERATIONS AT COLORADO’S HIGHWAY REST AREAS OR OTHER DESIGNATED LOCATIONS [Emergency rule expired 12/25/2020]](https://www.frixlaw.com/law-library/statutes/STATE_CO_CCR_2_CCR_601_24.md)
- [2 CCR 601-25 RULES GOVERNING THE SUSPENSION OR REVOCATION OF PERMITS FOR THE TRANSPORTATION OF HAZARDOUS AND NUCLEAR MATERIALS BY MOTOR VEHICLE](https://www.frixlaw.com/law-library/statutes/STATE_CO_CCR_2_CCR_601_25.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/STATE_CO_CCR_2_CCR_601_8. Check the current official text before relying on it. Not legal advice.