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Van Ness BRT Lighting Criteria

Van Ness BRT Lighting Criteria. Lighting Performance Characteristics. Design Criteria. Roadway Classification MAJOR Pedestrian Vehicle Conflict HIGH. IES RP-08. Illuminance Recommend values min maintained average 1.7 fc Average to Min Illuminance Ratio 3.0. Pole Spacing.

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Van Ness BRT Lighting Criteria

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  1. Van Ness BRT Lighting Criteria Lighting Performance Characteristics

  2. Design Criteria • Roadway Classification MAJOR • Pedestrian Vehicle Conflict HIGH

  3. IES RP-08 • Illuminance Recommend values min maintained average 1.7 fc • Average to Min Illuminance Ratio 3.0

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

  5. Lamp Characteristics

  6. PHOTOMETRICS 250W HPS

  7. PHOTOMETRICS 250W HPS

  8. PHOTOMETRICS LED

  9. PHOTOMETRICS LED

  10. Fixture Cutoff

  11. Full Cutoff

  12. Full Cutoff

  13. Cutoff

  14. Full Cutoff Rendering

  15. Semi-Cutoff Rendering

  16. Conclusion • 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. • 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.

  17. Questions

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