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Minimal luminance requirement for official highway signs. Final report.

Title:Minimal luminance requirement for official highway signs. Final report.
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Note:1986
  
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Subject:Standardization
Subject:Regulations
Subject:Reflectivity
Subject:Brightness
Subject:Absorptivity
Subject:Signs/ Signals
Subject:Regulatory Standards
Subject:Reflectance/ Absorptivity/ Reflectivity
Subject:Brightness/ Light Intensity/ Illumination
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