|Wanted: Colorists to Develop Test for Daytime Retroreflective Materials
The U.S. Department of Transportation and state DOTs are establishing specifications for fluorescent-retroreflective materials that improve highway safety. Lacking specific test methods that reproducibly quantify the daytime-appearance properties of fluorescent retroreflectives, testers are forced to rely on general methods not specific to these materials.
ASTM Subcommittee E12.05 on Fluorescence is developing a standard instrumental measurement to help users conformance-test fluorescent retroreflectives to meet government colorimetric specifications. The subcommittee is conducting the activity under ASTM Committee E12 on Color and Appearance which develops standards that quantify color and appearance properties.
Subcommittee chairman David M. Burns, senior research specialist, 3M Traffic Control Materials Laboratory, Maplewood Minn., welcomes individuals to develop a Standard Test Method for Daytime Color of Fluorescent Retroreflective Sheeting and Marking Materials for High Visibility Traffic Control and Personal Safety Applications. Burns says that existing methodology is either vague or allows too much measurement variability to accurately establish compliance.
The use of high-visibility traffic signing and personal-safety marking materials having both fluorescent and retroreflective properties has increased significantly over the last five years, says Burns. Fluorescent signing is becoming commonplace on todays roads in recognition of the positive effect high-visibility materials have on roadway safety.
To participate in this activity or for further technical information, contact David M. Burns, 3M Traffic Control Materials, Maplewood, Minn. (phone: 651/733-1214). Committee E12 meets Jan. 22-24 at ASTM International in West Conshohocken, Pa. For meeting or membership details, contact Maxine Topping, manager, Technical Committee Operations, ASTM International (phone: 610/ 832-9737). //
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