[11.5.10] In roadway lighting: The distance between a vertical line passing through a specified point (often the photometric center) of a luminaire and the curb or edge of a roadway.
« Back to Definitions Index[11.5.10] In roadway lighting: The distance between a vertical line passing through a specified point (often the photometric center) of a luminaire and the curb or edge of a roadway.
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