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Transportation Safety Division
3M™ Stamark™ High
Performance All Weather Tape
Series 380AW
Product Bulletin 380AW
June 2020
Replaces Product Bulletin 380AW Dated February 2020
1 Description
3M™ Stamark™ High Performance All Weather Tape Series 380AW (“Tape”) is a durable pavement marking tape
that is highly retroreflective under both wet and dry conditions. The Tape utilizes specially designed optics to
provide wet and dry performance. The Tape can be used as an inlay marking on new asphalt or as an overlay
marking on most asphalt and concrete pavement surfaces in good condition.
Series A380AW: Used for lane lines, edge lines, channelizing lines, and gore markings.
Series L380AW: With liner. Used to cut symbols and legends.
SMS L380AW: With liner. Precut symbols and legends.
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2 3M™ Stamark™ High Performance All Weather Tape Series 380AW June 2020
1.1 Product Features
o High retroreflective performance, when wet or dry
o Durable, conformable, and retroreflective
o Product design that provides long-term reflectivity
o Abrasion-resistant microcrystalline ceramic beads bonded in a highly durable polyurethane topcoat
o Manufactured with no (intentional) use of heavy metals, lead chromate pigments or other similar, lead-
containing chemicals
o Improved patterned surface that presents a near vertical surface to traffic to maximize retroreflectance
o Precoated with an extended season pressure sensitive adhesive (PSA) on bottom surface
o Nominal total thickness of 0.120 in. (3.0 mm)
oWhite: 380AW
o Yellow microcrystalline ceramic beads incorporated in 381AW tape to improve nighttime yellow color
o Yellow: 381AW
2 Specifications
2.1 Retroreflectivity
Table 1 presents minimum initial coefficient of retroreflected luminance (RL) values for tape under both wet
and dry conditions. Under dry conditions, R
E1710. Under wet conditions, R
reflectometer. R
values are expressed in millicandelas per square foot per footcandle [(mcd • ft-2) • fc-1].
L
is measured in accordance with ASTM E2832 or ASTM E2177 using a portable
L
is measured in accordance with the testing procedures of ASTM
L
Table 1. Minimum wet and dry R
Condition/Test
Entrance Angle
Observation Angle
Coefficient of Retroreflected
Luminance [mcd/m
a. An Entrance Angle of 88.76° and an Observation Angle of 1.05° are used to simulate the viewing geometry of a driver at a distance
of 30 meters.
Note: R
a
a
2
/lux]
values for Tape will be higher when measured under ASTM E2177 than when measured under ASTM
L
values for white and yellow Tape.
L
White (380AW) Yellow (381AW)
Dry
ASTM E1710
88.76° 88.76° 88.76° 88.76°
1.05° 1.05° 1.05° 1.05°
500 250 300 200
Wet & Rainy
ASTM E2832
Dry
ASTM E1710
Wet & Rainy
ASTM E2832
E2832. Regardless, stated minimum values shall be met using either test method.
Initial wet retroreflectance values must be measured in accordance with ASTM E2832 or ASTM E2177 prior to
installation. Wet retroreflectance values measured under a “condition of continuous wetting” (simulated rain)
shall be obtained in accordance with ASTM E2832. Wet retroreflectance values measured under a “condition
of wetness” (wet recovery) shall be obtained in accordance with ASTM E2177. To reduce measurement
variability, tests shall be performed in a controlled laboratory environment, on markings positioned in
accordance with ASTM E2832. Since new marking surfaces are hydrophobic, a wetting agent shall be used to
improve the wetting of test markings. A good wetting agent is a 0.1% by volume solution of liquid soap.
Measurements shall be reported as an average value for each roll tested, and averages shall be calculated
from a minimum of three measurements per roll.
2.2 Color
The daytime and nighttime colors of Tape conform to ASTM D6628, the Standard Specification for Color of
Pavement Marking Materials.
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3 3M™ Stamark™ High Performance All Weather Tape Series 380AW June 2020
2.3 Skid Resistance
The patterned, retroreflective, pliant polymer surfaces of Tape shall provide average initial skid resistance
values of 45 BPN or more when tested according to ASTM E303, subject to the following modification:
o Skid resistance is calculated as the average of two measurements taken at an angle of 45° from one
another.
2.4 Patchability
Snow removal equipment and heavy traffic may cause wear and damage to Tape. Such damaged areas can be
repaired using patches made of Tape. Remove damaged Tape and replace it according to the instructions
presented in the “Overlay Applications” section of 3M Information Folder 5.7
.
3 Application
Install Tape according to the instructions presented in 3M Information Folder 5.7.
4 Durability
The Tape is weather resistant and provides excellent retroreflectivity and color retention. The Tape is a highly
effective lane marking material and will show no appreciable fading, lifting, shrinkage, or chipping for the duration
of the warranty period, when applied according to the 3M requirements described in the 3M product literature.
The Tape’s durability depends on several environmental and traffic conditions, including, but not limited to, snow
removal practices, method of application, and pavement and atmospheric conditions at the time of application. It is
recommended that the customer thoroughly evaluate Tape under the conditions present at the installation location
prior to large-scale implementation.
5Storage
Store indoors, in a cool, dry area. Use within one year of receipt.
6 Health and Safety Information
Read all health hazard, precautionary, and first aid statements found in the Safety Data Sheets (SDS) and Article
Information Sheets for important health, safety, and environmental information. To obtain SDSs and Article
Information Sheets for 3M products, go to 3M.com/SDS, contact 3M by mail, or for urgent requests
call 1-800-364-3577.
7 Warranty Information
7.1 3M Warranty
3M warrants that, under normal traffic conditions, Tape used in pavement marking applications will remain
visible and retain a minimum coefficient of retroreflected luminance (R
conditions when measured in accordance with ASTM E1710, and Tape used in long line pavement marking
applications will retain a minimum R
with ASTM E2832, for the periods presented in Table 2 (“Warranty Period”), as measured from the date of
installation (“Installation Date”), subject to the provisions presented in Table 2 (“3M Warranty”).
of 50 mcd/m2/lux under wet conditions when measured in accordance
L
) of 100 mcd/m2/lux under dry
L
Table 2. Warranty periods for Tape applied as longitudinal lines and as symbols and legends.
Application Warranty Period
Longitudinal Markings 4 years
Symbols and Legends
a. Retained RL performance of Tape is not warranted under
wet conditions for symbols and legends.
a
2 years
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7.2 3M Warranty Terms and Conditions
• If Tape is installed in grooves, the depths of the grooves shall be between 150 and 200 mils. Grooves shall
be made with a large diameter cutting head with gang-stacked diamond cutting blades to produce a flat
(smooth) groove surface, following the Stamark pavement marking tape application requirements
described in 3M Information Folder 5.18
• Loss of adhesion is not covered by the 3M Warranty when Tape is applied to surfaces that have been
finished using anything other than a gang-stacked diamond cutting head.
• Coefficient of retroreflected luminance (R
angles according to ASTM E1710, when measuring under dry conditions, or ASTM E2832, when
measuring under wet condition, using the sampling and testing procedures outlined herein. Equipment
used in measurements shall be in good calibrated order, according to the calibration schedule
recommended by the equipment manufacturer, at the time of measurement. 3M may use an additional
calibrated instrument or request a calibrated referee instrument to validate measurements.
• Tape and other 3M components involved in the 3M Warranty must be stored, applied, installed,
processed, and used in accordance with all 3M application procedures found in 3M's product bulletins,
information folders, manufacturing manuals, and technical memos (which will be furnished upon request).
• Tape shall be applied with the 3M-required surface preparation adhesive if the installation conditions
warrant its use, as per the Stamark pavement marking tape installation instructions in 3M Information
Folder 5.7.
• A failure to meet the 3M Warranty must be solely the result of design or manufacturing defects and not of
(a) outside causes including improper fabrication, improper application, handling, maintenance, or
installation; (b) substrate failure, exposure to chemicals, burial, abrasion or other mechanical damage,
improper use, vandalism, or malicious mischief; or (c) an act of God.
• 3M reserves the right to determine the type of replacement marking and method of installation.
• Claims made under this warranty will be honored only if (a) the customer has maintained an accurate
record of Installation Date, which constitutes the start of the Warranty Period; (b) 3M is notified in writing
of a failure within one month of its discovery; (c) reasonable information requested by 3M is provided;
and (d) 3M is permitted to verify the cause of the alleged failure.
• Applications in mountainous, heavy snowfall areas above 5,000 ft. (1,500 m) are not covered under the
3M Warranty.
• Damage to pavement markings caused by snow removal equipment is not covered under the 3M
warranty.
• Tape must be shown not to meet the 3M Warranty when measured according to the appropriate ASTM
test method, using the sampling procedure described below, to qualify for remedy under the 3M
Warranty.
.
) shall be determined at 1.05° observation and 88.76° entrance
L
7.3 Exclusive Limited Remedy
If Tape is shown not to meet the 3M Warranty, 3M's sole responsibility and purchaser's and user's exclusive
remedy shall be: 3M will provide the replacement materials that will restore the pavement marking
retroreflectivity values to warranty levels or greater for the unexpired term of the original Warranty Period.
7.4 Sampling and Testing Procedure for Determining Initial and Retained Coefficients of Retroreflected Luminance for 3M Warranty Purposes
Step 1: A visual night inspection must be made with a 3M representative and a customer representative
present to identify areas of installation which appear to be below the specified minimum retained reflectance
values.
Areas which appear to be below the minimum retained reflectance value shall be identified as potential zones
of replacement (“Zone of Replacement”). To qualify for replacement, a zone must be at least 360 feet (108
meters) in road length and shall consist of either edge lines, center lines, or lane lines, but not in combination.
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Step 2: Within each zone, reflectance measurements must be taken at specified measurement sections. The
measurement procedure varies based on the total length of the Zone of Replacement, as described below.
a Zone of Replacement Measuring 360 Feet (108 m) to 1,080 Feet (324 m) in Length
For continuous lines, reflectance measurements must be made at approximately 20 ft. (6 m) intervals
throughout the Zone of Replacement. For skip lines, two measurements must be taken at two random
locations on each skip throughout the Zone of Replacement.
Figure 1. Measure every 20 ft. on continuous lines or 2 measurements per skip for each measurement
section.
b Zone of Replacement Measuring 1,080 Feet (329 m) to 6 Miles (9.6 km) in Road Length
A minimum of three measurement sections must be specified within the Zone of Replacement. Each
measurement section must be at least 360 ft. in road length. The start point, the midpoint, and the end point of
the Zone of Replacement must be included in respective measurement sections as shown in Figure 2. A
minimum of 18 measurements must be made at each of three measurement sections within the Zone of
Replacement. For continuous lines, reflectance measurements must be made at 20 ft. (6 m) intervals
throughout each measurement section. For skip lines, two measurements must be taken at two random
locations on each skip in the measurement sections.
Figure 2. Measure every 20 ft. on continuous lines or 2 measurements per skip for each measurement
section.
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c Zone of Replacement Greater than 6 Miles in Road Length
A minimum of 18 measurements must be made in each measurement section within the Zone of Replacement.
The start point and the end point must be a part of a measurement section. Each 3-mile (4.8 kilometers) interval
throughout the Zone of Replacement must include at least one measurement section. For continuous lines,
reflectance measurements must be made at 20 ft. (6 m) intervals throughout each measurement section. For
skip lines, two measurements must be taken at two random locations on each skip in the measurement sections.
Figure 3. Measure every 20 ft. on continuous lines or 2 measurements per skip for each measurement
section.
Step 3: All reflectance measurements made at checkpoints shall be made on clean, dry surfaces with a
minimum temperature of 40 °F (4 °C). The test instrument shall use an entrance angle of 88.76° and an
observation angle 1.05° which represent a simulated driver viewing geometry at a 30-meter distance.
Step 4: All reflectance measurements within the Zone of Replacement must be averaged to determine if the
minimum retained retroreflectance values have been met.
7.5 Materials Replacement Condition
Tape must be applied according to the Stamark pavement marking tape installation instructions in 3M
Information Folder 5.7 to qualify for any applicable materials replacement provisions.
7.6 Disclaimer
THE 3M WARRANTY IS MADE IN LIEU OF ALL OTHER WARRANTIES OR CONDITIONS, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OR CONDITION OF
MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE, OR ANY IMPLIED WARRANTY ARISING
OUT OF A COURSE OF DEALING OR OF PERFORMANCE, CUSTOM, OR USAGE OF TRADE.
7.7 Limitation of Liability
Except for the limited remedy stated above, and except where prohibited by law, 3M will not be liable for any
loss or damage arising from the Tape or any 3M product, whether direct, indirect, special, incidental, or
consequential damages (including but not limited to lost profits, business, or revenue in any way), regardless
of the legal theory asserted including warranty, contract, negligence, or strict liability.
8 Other Product Information
Always confirm that you have the most current version of the applicable product bulletin, information folder, or
other product information from 3M’s Website at http://www.3M.com/roadsafety
.
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9 Literature References
3M IF 5.2 Highway Tape Applicator (HTA)
3M IF 5.7
3M IF 5.8
3M IF 5.18
ASTM Test Methods are available from ASTM International, West Conshohocken, PA.
3M™ Stamark™ Tapes Pavement Surface Preparation and Application Techniques
3M™ Stamark™ Pre-Cut Symbols and Legends Application
Application Guidelines for Pavement Markings in Grooved Pavement Surfaces
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For Information or Assistance
Call:
In Canada
1
Interne
1-800-553-1380
Call:
-800-3M HELPS (1-800-364-3577)
t:
http://www.3M.com/roadsafety
3M, Science. Applied to Life., and Stamark are trademarks of 3M. Used under license in Canada.
All other trademarks are the property of their respective owners.
3M assumes no responsibility for any injury, loss, or damage arising out of the use of a product that is not of our
manufacture. Where reference is made in literature to a commercially available product, made by another
manufacturer, it shall be the user’s responsibility to ascertain the precautionary measures for its use outlined by
the manufacturer.
Important Notice
All statements, technical information and recommendations contained herein are based on tests we believe to be
reliable at the time of this publication, but the accuracy or completeness thereof is not guaranteed, and the
following is made in lieu of all warranties, or conditions express or implied. Seller's and manufacturer's only
obligation shall be to replace such quantity of the product proved to be defective. Neither seller nor manufacturer
shall be liable for any injury, loss or damage, direct, indirect, special, or consequential, arising out of the use of or
the inability to use the product. Before using, user shall determine the suitability of the product for his/her
intended use, and user assumes all risk and liability whatsoever in connection therewith. Statements or
recommendations not contained herein shall have no force or effect unless in an agreement signed by officers of
seller and manufacturer.
Transportation Safety Division
3M Center, Building 0225-04-N-14
St. Paul, MN 55144-1000 USA
Phone 1-800-553-1380
Web 3M.com/roadsafety
Please recycle. Printed in USA © 3M 2020.
All rights reserved. Electronic Only
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