Finish and Contrast [4.30.5]
All signs covered by 4.30 must have a non-glare finish, such as matte or eggshell. Recommendations: An eggshell finish is recommended. Consideration should also be given to light sources and the ambient lighting to prevent glare on sign surfaces. Examples of acceptable and unacceptable finishes, according to SEGD, include:
| Material | Acceptable | Unacceptable |
| finish paints and inks | eggshell, matte | gloss or semi-gloss |
| acrylic sheet, mylar, frosted glass | most non-glare types | polished surface |
| self-adhesive vinyl film | most non-glossy types | glossy |
| metal | certain satin or random brushed finishes | polished or directional brushed finishes |
Recommendations: Light characters and symbols on a dark background are generally considered easier to read than dark-on-light (either is allowed). A contrast of at least 70% based on the light reflectance value is recommended.
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