National Academies Press: OpenBook

Solid-State Roadway Lighting Design Guide: Volume 2: Research Overview (2020)

Chapter: Appendix C: Illuminance Characterization Tables

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Page 119
Suggested Citation:"Appendix C: Illuminance Characterization Tables." National Academies of Sciences, Engineering, and Medicine. 2020. Solid-State Roadway Lighting Design Guide: Volume 2: Research Overview. Washington, DC: The National Academies Press. doi: 10.17226/25679.
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Page 119
Page 120
Suggested Citation:"Appendix C: Illuminance Characterization Tables." National Academies of Sciences, Engineering, and Medicine. 2020. Solid-State Roadway Lighting Design Guide: Volume 2: Research Overview. Washington, DC: The National Academies Press. doi: 10.17226/25679.
×
Page 120
Page 121
Suggested Citation:"Appendix C: Illuminance Characterization Tables." National Academies of Sciences, Engineering, and Medicine. 2020. Solid-State Roadway Lighting Design Guide: Volume 2: Research Overview. Washington, DC: The National Academies Press. doi: 10.17226/25679.
×
Page 121
Page 122
Suggested Citation:"Appendix C: Illuminance Characterization Tables." National Academies of Sciences, Engineering, and Medicine. 2020. Solid-State Roadway Lighting Design Guide: Volume 2: Research Overview. Washington, DC: The National Academies Press. doi: 10.17226/25679.
×
Page 122
Page 123
Suggested Citation:"Appendix C: Illuminance Characterization Tables." National Academies of Sciences, Engineering, and Medicine. 2020. Solid-State Roadway Lighting Design Guide: Volume 2: Research Overview. Washington, DC: The National Academies Press. doi: 10.17226/25679.
×
Page 123
Page 124
Suggested Citation:"Appendix C: Illuminance Characterization Tables." National Academies of Sciences, Engineering, and Medicine. 2020. Solid-State Roadway Lighting Design Guide: Volume 2: Research Overview. Washington, DC: The National Academies Press. doi: 10.17226/25679.
×
Page 124
Page 125
Suggested Citation:"Appendix C: Illuminance Characterization Tables." National Academies of Sciences, Engineering, and Medicine. 2020. Solid-State Roadway Lighting Design Guide: Volume 2: Research Overview. Washington, DC: The National Academies Press. doi: 10.17226/25679.
×
Page 125
Page 126
Suggested Citation:"Appendix C: Illuminance Characterization Tables." National Academies of Sciences, Engineering, and Medicine. 2020. Solid-State Roadway Lighting Design Guide: Volume 2: Research Overview. Washington, DC: The National Academies Press. doi: 10.17226/25679.
×
Page 126

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C-1 APPENDIX C: ILLUMINANCE CHARACTERIZATION TABLES Table 21. 2100K HPS Horizontal Illuminance Light Level Illuminance (lx) Downhill Shoulder Downhill Lane Uphill Lane Uphill Shoulder Horizontal Horizontal Horizontal Horizontal Medium Maximum 33.3 37.3 31.7 25.0 Average 12.9 13.8 10.9 7.7 Minimum 3.0 3.4 1.0 0.6 Avg/Min 4.3 4.1 10.8 13.5 Max/Min 11.2 11.0 31.4 43.6 Surround Ratio 0.9 0.7 Table 22. 2100 HPS Vertical Illuminance Light Level Illuminance (lx) Downhill Shoulder Downhill Lane Uphill Lane Uphill Shoulder Vertical Vertical Vertical Vertical Medium Maximum 19.9 25.5 23.6 18.9 Average 8.9 11.6 9.5 6.6 Minimum 3.1 3.8 0.2 1.0 Table 23. 5000K LED HUR-HSR Horizontal Illuminance Light Level Illuminance (lx) Downhill Shoulder Downhill Lane Uphill Lane Uphill Shoulder Horizontal Horizontal Horizontal Horizontal High Maximum 32.0 41.5 47.4 35.9 Average 17.0 19.9 20.4 14.8 Minimum 5.3 1.7 6.4 3.7 Avg/Min 3.2 11.8 3.2 4.0 Max/Min 6.1 24.7 7.4 9.7 Surround Ratio 0.9 0.7 Medium Maximum 21.2 25.6 28.1 23.1 Average 10.2 12.1 13.7 8.9 Minimum 2.6 1.3 4.3 2.1 Avg/Min 3.9 9.0 3.2 4.2 Max/Min 8.0 19.0 6.5 10.7 Surround Ratio 0.8 0.7 Low Maximum 16.3 17.6 19.5 19.9 Average 8.2 8.8 8.9 7.3 Minimum 1.2 1.4 2.5 1.2 Avg/Min 6.9 6.3 3.5 6.2 Max/Min 13.8 12.7 7.7 16.8

C-2 Light Level Illuminance (lx) Downhill Shoulder Downhill Lane Uphill Lane Uphill Shoulder Horizontal Horizontal Horizontal Horizontal Surround Ratio 0.9 0.8 Table 24. 5000K LED HUR-HSR Vertical Illuminance Light Level Illuminance (lx) Downhill Shoulder Downhill Lane Uphill Lane Uphill Shoulder Vertical Vertical Vertical Vertical High Maximum 25.1 33.0 34.6 23.2 Average 14.2 16.1 15.8 11.6 Minimum 2.0 2.4 1.3 3.2 Medium Maximum 15.1 20.6 21.3 15.1 Average 8.4 10.1 10.8 7.4 Minimum 1.0 1.7 0.7 1.1 Low Maximum 12.8 15.7 17.1 12.4 Average 7.4 9.3 8.0 5.8 Minimum 1.5 1.0 0.7 1.2 Table 25. 4000K LED HUR-HSR Horizontal Illuminance Light Level Illuminance (lx) Downhill Shoulder Downhill Lane Uphill Lane Uphill Shoulder Horizontal Horizontal Horizontal Horizontal High Maximum 29.5 40.5 42.0 37.5 Average 14.9 18.3 19.8 16.3 Minimum 4.6 4.3 5.7 2.9 Avg/Min 3.2 4.2 3.5 5.5 Max/Min 6.4 9.4 7.4 12.8 Surround Ratio 0.8 0.8 Medium Maximum 21.1 24.3 26.3 16.1 Average 9.2 11.7 11.2 8.2 Minimum 3.3 2.1 3.1 2.8 Avg/Min 2.8 5.5 3.6 3.0 Max/Min 6.4 11.4 8.4 5.8 Surround Ratio 0.8 0.7 Low Maximum 14.3 20.8 22.2 20.7 Average 7.5 8.7 10.1 8.7 Minimum 3.2 2.2 3.0 1.6 Avg/Min 2.4 3.9 3.4 5.3 Max/Min 4.5 9.4 7.5 12.7 Surround Ratio 0.9 0.9

C-3 Table 26. 4000K LED HUR-HSR Vertical Illuminance Light Level Illuminance (lx) Downhill Shoulder Downhill Lane Uphill Lane Uphill Shoulder Vertical Vertical Vertical Vertical High Maximum 22.2 29.0 30.9 23.7 Average 13.7 16.0 16.7 13.0 Minimum 2.4 3.3 2.0 3.5 Medium Maximum 14.0 18.7 19.0 15.3 Average 8.5 10.2 10.1 8.2 Minimum 2.2 1.7 1.6 1.7 Low Maximum 11.1 14.8 15.3 11.9 Average 6.5 8.5 8.7 6.7 Minimum 2.0 2.2 1.7 1.6 Table 27. 3000K LED HUR-HSR Horizontal Illuminance Light Level Illuminance (lx) Downhill Shoulder Downhill Lane Uphill Lane Uphill Shoulder Horizontal Horizontal Horizontal Horizontal High Maximum 29.2 41.4 39.5 37.7 Average 15.1 20.0 17.8 14.7 Minimum 5.3 4.1 6.3 2.9 Avg/Min 2.9 4.8 2.8 5.1 Max/Min 5.6 10.0 6.3 13.0 Surround Ratio 0.8 0.8 Medium Maximum 20.5 22.3 27.1 24.8 Average 9.2 10.3 14.8 10.5 Minimum 2.6 1.4 2.4 2.7 Avg/Min 3.5 7.2 6.3 3.8 Max/Min 7.8 15.6 11.5 9.1 Surround Ratio 0.9 0.7 Low Maximum 15.8 19.1 21.1 13.0 Average 7.7 10.4 9.4 7.6 Minimum 3.1 1.6 1.9 2.0 Avg/Min 2.5 6.5 5.0 3.8 Max/Min 5.1 11.9 11.3 6.5 Surround Ratio 0.7 0.8

C-4 Table 28. 3000K LED HUR-HSR Vertical Illuminance Light Level Illuminance (lx) Downhill Shoulder Downhill Lane Uphill Lane Uphill Shoulder Vertical Vertical Vertical Vertical High Maximum 20.7 27.6 30.7 23.9 Average 12.6 16.5 15.9 12.2 Minimum 3.0 4.3 2.5 3.1 Medium Maximum 13.8 18.1 19.4 21.5 Average 7.7 9.8 10.5 9.5 Minimum 0.5 1.9 1.8 2.0 Low Maximum 11.4 14.5 14.9 12.2 Average 7.0 7.9 7.9 6.5 Minimum 1.7 1.5 0.8 1.4 Table 29. 4000K LED HUR-LSR Horizontal Illuminance Light Level Illuminance (lx) Downhill Shoulder Downhill Lane Uphill Lane Uphill Shoulder Horizontal Horizontal Horizontal Horizontal High Maximum 25.1 35.7 40.5 35.9 Average 8.3 16.9 18.6 14.1 Minimum 1.5 3.6 5.3 3.4 Avg/Min 5.7 4.6 3.5 4.1 Max/Min 17.2 9.8 7.6 10.5 Surround Ratio 0.5 0.8 Medium Maximum 16.9 24.8 26.9 25.0 Average 5.2 10.5 11.6 9.4 Minimum 1.0 1.8 2.6 1.7 Avg/Min 5.1 5.8 4.4 5.6 Max/Min 16.7 13.8 10.2 14.9 Surround Ratio 0.5 0.8 Low Maximum 13.1 18.9 20.5 20.5 Average 4.4 9.4 9.9 8.0 Minimum 1.3 1.1 1.6 1.0 Avg/Min 3.3 8.3 6.0 7.9 Max/Min 9.9 16.7 12.5 20.4 Surround Ratio 0.5 0.8

C-5 Table 30. 4000K LED HUR-LSR Vertical Illuminance Light Level Illuminance (lx) Downhill Shoulder Downhill Lane Uphill Lane Uphill Shoulder Vertical Vertical Vertical Vertical High Maximum 9.8 21.7 23.4 20.7 Average 3.9 10.2 10.8 8.2 Minimum 0.9 2.0 2.4 2.4 Medium Maximum 6.0 13.2 15.5 12.3 Average 1.8 6.6 7.7 5.4 Minimum 0.2 2.4 1.5 1.4 Low Maximum 5.7 11.7 13.2 11.5 Average 2.1 5.8 6.5 4.7 Minimum 0.6 1.0 1.0 1.4 Table 31. 4000K LED LUR-HSR Horizontal Illuminance Light Level Illuminance (lx) Downhill Shoulder Downhill Lane Uphill Lane Uphill Shoulder Horizontal Horizontal Horizontal Horizontal High Maximum 26.7 36.2 39.9 33.4 Average 12.8 16.5 18.0 12.6 Minimum 3.2 2.2 3.0 2.1 Avg/Min 4.0 7.4 5.9 5.8 Max/Min 8.3 16.2 13.2 15.5 Surround Ratio 0.8 0.7 Medium Maximum 17.6 25.8 26.4 24.0 Average 7.5 10.6 11.0 8.4 Minimum 1.7 2.5 2.2 1.4 Avg/Min 4.5 4.2 5.0 5.9 Max/Min 10.6 10.1 11.9 16.8 Surround Ratio 0.7 0.8 Low Maximum 13.7 20.5 21.2 18.3 Average 6.4 8.5 8.4 6.6 Minimum 1.3 2.3 1.7 0.9 Avg/Min 4.9 3.7 4.9 7.5 Max/Min 10.4 9.0 12.4 21.0 Surround Ratio 0.7 0.8

C-6 Table 32. 4000K LED LUR-HSR Vertical Illuminance Light Level Illuminance (lx) Downhill Shoulder Downhill Lane Uphill Lane Uphill Shoulder Vertical Vertical Vertical Vertical High Maximum 17.7 26.6 30.0 22.7 Average 9.5 12.7 13.8 10.0 Minimum 1.0 2.5 0.9 1.1 Medium Maximum 11.7 16.6 18.1 13.1 Average 6.3 8.5 8.2 6.0 Minimum 0.7 0.9 0.7 0.7 Low Maximum 9.5 13.6 15.4 11.2 Average 5.2 6.7 6.6 4.5 Minimum 1.2 2.2 0.5 0.3 Table 33. 4000K LED LUR-LSR Horizontal Illuminance Light Level Illuminance (lx) Downhill Shoulder Downhill Lane Uphill Lane Uphill Shoulder Horizontal Horizontal Horizontal Horizontal High Maximum 27.5 37.1 39.9 34.1 Average 9.3 16.6 17.9 13.2 Minimum 3.1 3.9 6.3 4.2 Avg/Min 3.0 4.3 2.8 3.2 Max/Min 8.9 9.5 6.3 8.2 Surround Ratio 0.6 0.7 Medium Maximum 25.8 26.2 27.8 21.8 Average 7.5 12.5 12.9 8.5 Minimum 2.1 4.3 3.0 1.2 Avg/Min 3.5 2.9 4.3 6.9 Max/Min 12.1 6.1 9.2 17.9 Surround Ratio 0.6 0.7 Low Maximum 13.1 19.9 21.0 18.4 Average 4.2 7.7 8.9 6.7 Minimum 0.2 0.7 0.9 1.5 Avg/Min 22.9 10.4 10.2 4.3 Max/Min 72.0 27.1 24.1 11.9 Surround Ratio 0.5 0.7

C-7 Table 34. 4000K LED LUR-LSR Vertical Illuminance Light Level Illuminance (lx) Downhill Shoulder Downhill Lane Uphill Lane Uphill Shoulder Vertical Vertical Vertical Vertical High Maximum 13.1 25.2 28.8 22.6 Average 5.8 13.4 14.3 10.2 Minimum 2.0 4.5 4.0 4.5 Medium Maximum 8.5 15.9 18.3 12.6 Average 4.1 9.4 9.4 6.4 Minimum 0.1 3.8 2.8 1.7 Low Maximum 5.1 12.7 13.9 9.7 Average 2.4 6.7 6.2 4.4 Minimum 0.9 1.3 0.7 0.7

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Solid-State Roadway Lighting Design Guide: Volume 2: Research Overview Get This Book
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Providing light beyond the limits of the roadway travel lanes benefits drivers’ visual performance, spectral content of light-emitting diode (LED) sources should be a design consideration, and there are not currently any health impacts from properly designed roadway lighting are among the findings of this survey report.

The TRB National Cooperative Highway Research Program's pre-publication draft of NCHRP Research Report 940: Solid-State Roadway Lighting Design Guide: Volume 2: Research Overview determines the current guidance for the use of Solid State Lighting (SSL); identifies the research that still needs to be accomplished to assist in its proper implementation; and develops a comprehensive, easy to use, set of guidelines using currently available information and new research being proposed as part of this project.

Also see this guide's accompanying pre-publication draft, NCHRP Research Report 940: Solid-State Roadway Lighting Design Guide: Volume 1: Guidance.

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