1.1 This specification covers flexible, non-exposed glass bead lens and microprismatic, retroreflective sheeting designed for use on traffic control signs, delineators, barricades, and other devices. This specification does not address inks, overlays, or other imaging methods that may be applied to retroreflective sheeting material to create traffic signs or other devices.
1.2 Although this specification provides photometric requirements for retroreflective sheeting under evaluation, minimum performance requirements of in-service signs or other devices are outside the scope of this document.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 The following safety hazards caveat pertains only to the test methods portion, Section 7, of this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM D4956-17 Referenced Document
ASTM B209 Standard Specification for Aluminum and Aluminum- Alloy Sheet and Plate
ASTM B209M Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate (Metric)*, 2024-04-22 Update
ASTM B449 Standard Specification for Chromates on Aluminum*, 2022-10-01 Update
ASTM D2794 Standard Test Method for Resistance of Organic Coatings to the Effects of Rapid Deformation (Impact)*, 2024-01-25 Update
ASTM E1164 Standard Practice for Obtaining Spectrophotometric Data for Object-Color Evaluation
ASTM E1247 Standard Test Method for Identifying Fluorescence in Object-Color Specimens by Spectrophotometry
ASTM E1347 Standard Test Method for Color and Color-Difference Measurement by Tristimulus (Filter) Colorimetry
ASTM E1349 Standard Test Method for Reflectance Factor and Color by Spectrophotometry Using Bidirectional Geometry
ASTM E2152 Standard Practice for Computing the Colors of Fluorescent Objects from Bispectral Photometric Data*, 2023-06-01 Update
ASTM E2153 Standard Practice for Obtaining Bispectral Photometric Data for Evaluation of Fluorescent Color*, 2023-06-01 Update
ASTM E2301 Standard Test Method for Daytime Colorimetric Properties of Fluorescent Retroreflective Sheeting and Marking Materials for High Visibility Traffic Control and Personal Safety Applications Using 45°:No*, 2022-10-01 Update