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Showing 1 to 1 of 1 for “"Purple signs"”.
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Improvement of Conspicuity for Trailblazing Signs
… on coral, black on light blue, and yellow on purple signs were chosen for further testing against a baseline black on orange sign, all with 125-mm, D series letters. Study 2 was an on-road field study of conspicuity, conducted using an instrumented vehicle through a construction zone-related …