IEVref:845-31-097ID:
Language:enStatus: Standard
Term: symmetric lighting, <in a road tunnel>
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Definition: lighting design technique where the light equally falls on objects in directions with and against the traffic

Note 1 to entry: Symmetric lighting is characterized by using luminaires that show a luminous intensity distribution that is symmetric in relation to the plane normal to the direction of the traffic.

Note 2 to entry: See also "pro-beam lighting", "counter-beam lighting".


Publication date:2020-12
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