1. All
machinery and equipment, including implements of husbandry, horse drawn
vehicles, farm tractors, road machinery, road graders, and every vehicle which
has a maximum speed that does not exceed 25 miles per hour or every vehicle
capable of speeds in excess of 25 miles per hour but which in its normal
operational use is moved at less than 25 miles per hour on the highway, shall
display a "Slow Moving Vehicle" emblem complying with the specifications set
forth in Section 7 of this regulation.
2. All road construction or maintenance
machinery when engaged in actual construction or maintenance work guarded by a
flagman or clearly visible warning signs need not display the "Slow Moving
Vehicle" emblem.
3. All machinery,
equipment and vehicles displaying such Slow Moving Vehicle emblem, when being
transported or moved on the highways at speeds in excess of 25 miles per hour,
shall have the Slow Moving Vehicle emblem removed or covered when being so
moved or transported.
4. Any
combination of slow moving vehicles, i.e., tractor-trailers, shall display the
"Slow Moving Vehicle" emblem on the rearmost unit of the combination.
5. The Slow Moving Vehicle emblem shall be
mounted as near the center as possible on the rear of the vehicle at a height
of not less than 2 feet nor more than 6 feet from the ground to the bottom edge
of the emblem. Such emblem will be mounted with a point of the triangle at the
top and shall be mounted in a plane perpendicular to the direction of
travel.
6. The requirements for
such emblem shall be in addition to any other lighting devices required by
law.
7. Specifications for SLOW
MOVING VEHICLE Emblem.
A. Description:
(1) The SLOW MOVING VEHICLE Emblem (Fig. 1)
shall consist of a fluorescent yellow-orange triangle with a dark, red
reflective border. The yellow-orange fluorescent triangle is for daylight
identification. The reflective border defines the shape of the fluorescent
color in daylight and becomes a hollow red triangle in the path of motor
vehicle headlights at night.
B. Performance Requirements:
(1)
Visibility. The
emblem shall be entirely visible in daylight and at night from all distances
between 600 feet and 100 feet from the rear when directly in front of lawful
upper beam of headlamps.
(2)
Dimensional requirements. The minimum size shall be as
shown in Fig. 1.
(3)
Color and reflectivity.
(a) The spectrophotometric color values of
the yellow-orange fluorescent material shall have a dominant wave length of
590-610 millimicrons and a purity of 98 percent before use. After Durability
Test, paragraph (4), the dominant wave length of the fluorescent material shall
not change more than 10 percent.
(b) The reflective material shall have
minimum intensity values at each of the angles listed per Table 1. After
Durability Test, paragraph (4), the minimum reflective intensity values for the
reflective material shall not change more than 20 percent from the values
specified in Table 1.
TABLE 1. Minimum Reflective Intensity Values,
R*
|
Divergence Angle, deg
|
Incidence Angle, deg
|
Reflective Intensity, R
|
|
0.2
|
0
|
10
|
|
0.2
|
15
|
7
|
|
0.2
|
30
|
5
|
|
0.5
|
0
|
5
|
|
0.5
|
15
|
4
|
|
0.5
|
30
|
2
|
*Measurements shall be conducted in accordance with
photometric testing procedures for reflex-reflectors as specified in Society of
Automotive Engineers Standard, SAE J594, Reflex Reflectors, and using 50,
±3 sq. in. (322.6, ± 32.3 sq. centimers) of reflective material.
The maximum dimension of the test surface shall not be greater than 1.5 times
the minimum dimension. The Reflective Intensity (R) is computed from the
equation.
Click to view
image
where
R = reflective intensity, candlepower per incident
foot-candle per square foot
Lr = illumination incident upon receiver at observation
point, foot-candles
Ls = illumination incident upon a plane perpendicular to the
incident ray at the test specimen position, foot-candles
d = distance from test specimen to source of elimination (100
feet as specified in SAE J594), feet
A = area of test surface, square feet
(4)
Durability
(a) The
reflective and fluorescent materials shall be tough, flexible and of sufficient
thickness and strength to meet the requirements of sections B and C. After the
Durability test, paragraph (4), the fluorescent and reflective material shall
show no appreciable discoloration, cracking, crazing, blistering, loss of
durable bond, or dimensional change.
(b) Backing material for portable
identification emblem shall be equivalent to 0.040 in. minimum thickness
aluminum, 22-gauge minimum thickness mill-galvanized or coated sheet steel with
the surface clean and receptive to a durable bond. The backing material shall
be free of burrs.
NOTE: These requirements are minimal
and do not preclude the use of materials having superior performance.
C. Test
Procedures:
(1) The emblem shall be tested in
conformance with the following sections from SAE J575, Test for Motor Vehicle
Lighting Devices and Components:
Section B- Samples for test
Section D- Laboratory Facilities
Section E- Vibration Test
Section H- Corrosion Test (pertains to face of emblem
only)
(2) Durability Test.
Samples shall be exposed to the sun at an angle of 45 deg to horizontal and
facing south per American Society for Testing and Materials, ASTM D1014, Method
of Conducting Exterior Exposure Tests of Paints on Steel.
TABLE 2. Durability Test Periods
|
Minimum Test Period, months
|
Minimum Test Period, months
|
|
Location
|
Fluorescent
|
Reflective
|
|
Outside in Midwest
|
12
|
24
|
|
Or
|
|
Outside in Miami, Florida
|
6
|
12
|
(3)
Drop Test. Each test sample shall be dropped from a height of 5 feet (1.53 m)
to a smooth hard surface equivalent to rigid metal or concrete. Each test
sample shall be submitted to three drop tests: corner drop, edge drop, and flat
drop. Failure shall be considered to have occurred when the emblem will no
longer meet requirements in Section B.
8. All "Slow Moving Vehicle" emblems must be
approved for use and sale in the State of Colorado by the Department of
Revenue. Such approval shall be accomplished through the A.A.M.V.A. Equipment
Approval Section, Washington, D.C.
FIG. 1 - IDENTIFICATION EMBLEM
Click to view
image
Notes
1 CCR
204-10-50
37
CR 15, August 10, 2014, effective 8/30/2014
37
CR 22, November 25, 2014, effective
12/15/2014
37
CR 24, December 25, 2014, effective
1/14/2015
38
CR 04, February 25, 2015, effective
3/17/2015
38
CR 13, July 10, 2015, effective 7/30/2015
38
CR 16, August 25, 2015, effective 9/14/2015
38
CR 22, November 25, 2015, effective
12/15/2015
38
CR 23, December 10, 2015, effective
1/14/2016
39
CR 01, January 10, 2016, effective
1/30/2016
39
CR 03, February 10, 2016, effective
3/1/2016
39
CR 09, May 10, 2016, effective
5/30/2016
39
CR 10, May 25, 2016, effective
6/14/2016
39
CR 12, June 25, 2016, effective
7/30/2016
39
CR 15, August 10, 2016, effective
8/30/2016
39
CR 16, August 25, 2016, effective
9/14/2016
39
CR 23, December 10, 2016, effective
12/30/2016
40
CR 03, February 10, 2017, effective
3/2/2017
40
CR 13, July 10, 2017, effective
7/30/2017
40
CR 16, August 25, 2017, effective
9/14/2017
40
CR 19, October 10, 2017, effective
10/30/2017
40
CR 22, November 25, 2017, effective
12/15/2017
41
CR 02, January 25, 2018, effective
2/14/2018
41
CR 03, February 10, 2018, effective
3/2/2018
41
CR 06, March 25, 2018, effective
4/14/2018
41
CR 08, April 25, 2018, effective
5/15/2018
41
CR 09, May 10, 2018, effective
5/30/2018
41
CR 10, May 25, 2018, effective
6/14/2018
41
CR 15, August 10, 2018, effective
8/30/2018
41
CR 17, September 10, 2018, effective
9/30/2018
41
CR 19, October 10, 2018, effective
10/30/2018
41
CR 22, November 25, 2018, effective
12/15/2018
42
CR 03, February 10, 2019, effective
3/2/2019
42
CR 08, April 10, 2019, effective
5/15/2019
42
CR 10, May 25, 2019, effective
6/14/2019
42
CR 11, June 10, 2019, effective
6/30/2019
42
CR 14, July 25, 2019, effective
8/14/2019
43
CR 01, January 10, 2020, effective
1/30/2020
43
CR 04, February 25, 2020, effective
3/16/2020
43
CR 06, March 25, 2020, effective
4/14/2020
43
CR 07, April 10, 2020, effective
5/1/2020
43
CR 12, June 25, 2020, effective
7/16/2020
43
CR 18, September 25, 2020, effective
10/15/2020
44
CR 13, July 10, 2021, effective
7/31/2021
45
CR 01, January 10, 2022, effective
1/30/2022
45
CR 07, April 10, 2022, effective
7/1/2022
46
CR 05, March 10, 2023, effective
4/3/2023
46
CR 07, April 10, 2023, effective
4/30/2023
