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Evaluation of retroreflective sheetings for use on traffic control devices at construction work sites (FHWA-OK-91-06) 2177
(1991-6)
The overall objective of this project was to evaluate the relative adequacy of the engineering grade, super-engineering grade, and high-intensity grade sheetings when used on traffic control devices at construction work ...
Evaluation of retroflective sheetings for use on roadway traffic signs (FHWA-OK-95-02) 2193
(1994-9)
The primary objectives of this research were to evaluate the ODOT's policy on use of retroreflective sheeting products, and to identify any necessary changes to this policy based on driver visibility needs, durability of ...