Van Ness BRT Lighting Criteria Lighting Performance Characteristics

Design Criteria Roadway Classification Roadway ClassificationMAJOR Pedestrian Vehicle Conflict Pedestrian Vehicle ConflictHIGH

IES RP-08 Illuminance Recommend values Illuminance Recommend values min maintained average 1.7 fc Average to Min Illuminance Ratio Average to Min Illuminance Ratio3.0

Pole Spacing SFPUC 80’-90’ horizontally SFPUC 80’-90’ horizontally MTA pole height 30’ MTA pole height 30’ Luminaire height Luminaire height Roadway fixture+30’ Pedestrian fixture 16’

Lamp Characteristics HPS & LED Characteristics Lamp TypeHPSLED Lamp Wattage Cost / Fixture$900$2,000 Lumens28,0005,780 Lamp Life (Hours)20,00050,000

PHOTOMETRICS 250W HPS

PHOTOMETRICS LED

Fixture Cutoff

Full Cutoff

Cutoff

Full Cutoff Rendering

Semi-Cutoff Rendering

Conclusion Van Ness Corridor vehicular and pedestrian traffic volume, along with street width require higher lighting levels for safety compared to residential areas. Van Ness Corridor vehicular and pedestrian traffic volume, along with street width require higher lighting levels for safety compared to residential areas. Current LED technology is suitable for roadways with less traffic and smaller widths. A LED design for Van Ness would require additional fixtures and/or closer pole spacing to provide required lighting levels. Current LED technology is suitable for roadways with less traffic and smaller widths. A LED design for Van Ness would require additional fixtures and/or closer pole spacing to provide required lighting levels. Full cutoff fixtures will reduce the pole spacing requirements as well as induce shading in the pedestrian right of way. Full cutoff fixtures will reduce the pole spacing requirements as well as induce shading in the pedestrian right of way. Cutoff or Semi-Cutoff fixtures will reduce Sky Glow (light pollution) while maintaining suitable pole spacing, and comfortable levels of fill light. Cutoff or Semi-Cutoff fixtures will reduce Sky Glow (light pollution) while maintaining suitable pole spacing, and comfortable levels of fill light.

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