Wide Angle Prismatic retro-reflective Sheeting for Visual Impact Performance. 1.0 Scope - This specification covers flexible, colored, wide angle prismatic, retro-reflective sheeting, tape and related processing materials designed to enhance the day/nigh† visibility of traffic control signs and objects. 2.0 Applicable Documents - The following documents, of the issue in effect on the date of invitation for bids or request for proposal, form a part of †his specification to the extent specified herein: 2.1 ASTM Standards 2.2.1 B117 Method of salt spray (fog) testing 2.1.1 B209 Specification for Aluminum and Aluminum A\boy Sheet and Plate. 2.1.2 D523 Standard Method for Test for Specular Gloss. 2.1.3 E284 Standard Definition of terms relating to Appearance of Materials. 2.1.4 E308 Computing †he Colors of Objects by Using †he CIE System. 2.1.5 E810 Standard Test Method for Coefficient of retro-reflection of retro-reflective Sheeting. 2.1.6 Et164 Standard Practice for Obtaining Spectrophotometric Data for Object-Color Evaluation. 2.2 CIE Publication Number 39-2 Recommendations for Surface Colors for Visual Signaling 3.0 Description - The retro-reflective sheeting shall have a smooth surface with a distinctive interlocking diamond sent pattern and datum orientation marks visible from the face. The sheeting shall be pre-coated with a pressure sensitive adhesive backing protected by a removable liner.
