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CIE and Roadlighting

CIE and Roadlighting. Steve Jenkins Division 4 Representative. CIE Committees for Roadlighting. TC 4-15 Road Lighting Calculations, Test Data and Measurements TC 4-24 Calculation and Measurement of Tunnel Lighting Quality Criteria

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CIE and Roadlighting

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  1. CIE and Roadlighting Steve Jenkins Division 4 Representative

  2. CIE Committees for Roadlighting • TC 4-15 Road Lighting Calculations, Test Data and Measurements • TC 4-24 Calculation and Measurement of Tunnel Lighting Quality Criteria • TC4-26 Systems for Measurement of Photometric Quantities of Road Lighting Installations

  3. CIE Committees for Roadlighting • TC4-33 Discomfort Glare in Road Lighting • TC4-36 Visibility Design for Road Lighting • TC 4-44 Management and Maintenance of Road Lighting • TC 4-48 White Light in Road Lighting

  4. CIE 115:2008 • Lighting of Roads for Motor and Pedestrian Traffic • Since CIE 115:1995, power consumption and environmental aspects have become important. There have been improvements in performance of lamps, luminaires and electronic control gear. • Now possible to introduce adaptive lighting for roads with motorised traffic (M), conflict areas ( C) and pedestrian traffic (P)

  5. CIE 115:2008 • A structured model is developed for the selection of the appropriate lighting categories based on the luminance or illuminance concept. • Then applying, eg, time dependent variables like traffic volume or weather conditions, the model offers the possibility of using an adaptive system

  6. Criteria for Road Lighting • Roads for motor traffic – Luminance • Conflict areas – Luminance/illuminance concept (Eh) • Pedestrian areas – illuminance concept (Eh and Ev and Esc)

  7. Criteria for Road Lighting • Conflict Areas: • When vehicle streams intersect each other or with pedestrians, cyclists or others. • Change in road geometry. • Parking areas, toll stations

  8. Lighting Classes • Normal Lighting: • That lighting category which is appropriate if the same level is to be used throughout the hours of darkness. • Adaptive Lighting: • Temporal changes in parameters under consideration when selecting Normal class could allow relaxation of Normal levels.

  9. Lighting Areas • Motorised traffic, M, (for drivers of motorised vehicles – luminance) • Conflict areas, C, (where traffic streams intersect, or run into areas with peds. cyclists, or there is change in geometry or parking areas – luminance or illuminance) • Pedestrian and low speed areas, P, ( for needs of pedestrians – illuminance, H and V)

  10. Lighting Categories (Luminance)

  11. AS/NZS 1158.1.1:2005

  12. Conflict Areas (Illuminance)

  13. Conflict Areas, (Luminance)

  14. Pedestrian and Low speed Areas, (Illuminance)

  15. Pedestrian and Low speed Areas, (Glare)

  16. Pedestrian and Low speed Areas, (Glare)

  17. Model for M Categories

  18. Model for M Categories • Lighting category is • M = 6 – SWV • M = 6-3 =3 • If Category number is not a whole number, use the next lower whole number

  19. Model for C Categories

  20. Model for C Categories • Conflict Area category is • C = 6 – SWV • C = 6 - 4.5 =1.5 • If Category is not a whole number, use the next lower whole number, then • C = 1

  21. Model for P Categories

  22. Model for P Categories • Pedestrian Area Category is: • P = 6 – WV • P = 6 - 3.5 = 2.5 • If Category is not a whole number, use the next lower whole number, then • P = 2

  23. Implementing Adaptive Lighting

  24. Implementing Adaptive Lighting

  25. Implementing Adaptive Lighting

  26. Implementing Adaptive Lighting

  27. Pedestrian and Low speed Areas, (Illuminance)

  28. Summary • Proposes model for Adaptive Lighting • Weight important parameters for each time period • Sum of the Weighting Values is related to the Lighting category • Only the quantitative variables change, the qualitative variables stay at the appropriate Normal lighting levels

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