Work Item
ASTM WK15388

Revision of D4956-07 Standard Specification for Retroreflective Sheeting for Traffic Control


None Provided


Revision of Section S3 Artificial Accelerated Weathering 1.Limited and declining availability of Carbon Arc exposure equipment and testing capabilities. 2.Testing Efficiency (& Cost) related to (1). 3.Promotes global conformance in artificial weathering requirements for retroreflective sheeitng 4.Slightly better relationship to Outdoor (however, artificial exposure testing is still only grossly indicative and not predictive of natural outdoor durability: Pass indicates probably not fail immediately outdoors; Fail suggests probably will fail in relatively short period outdoors) 5.Artificial exposure testing is for Interim/Provisional qualification ONLY and will continue to be superseded by Outdoor exposure test results.


Developed by Subcommittee: D04.38

Committee: D04

Staff Manager: Ashley Wiand

Work Item Status

Date Initiated: 05-01-2007

Technical Contact: Carl Andersen

Item: 011

Ballot: COS0709

Status: Ballot Item Approved

Item: 002

Ballot: D04.38 (07-01)

Status: Will Reballot Item

Item: 001

Ballot: D04.38 (08-02)

Status: Will Reballot Item

Item: 001

Ballot: D04.38 (08-03)

Status: Negative Votes Need Resolution