National Academies Press: OpenBook

Solid-State Roadway Lighting Design Guide: Volume 1: Guidance (2020)

Chapter: NCHRP Research Report 940 Pre-Publication, Volume 1: Project 05-22

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Suggested Citation:"NCHRP Research Report 940 Pre-Publication, Volume 1: Project 05-22." National Academies of Sciences, Engineering, and Medicine. 2020. Solid-State Roadway Lighting Design Guide: Volume 1: Guidance. Washington, DC: The National Academies Press. doi: 10.17226/25678.
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Solid-State Roadway Lighting Design Guide Volume 1: Guidance Paul Lutkevich WSP Boston, MA Ronald Gibbons Rajaram Bhagavathula Virginia Tech Transportation Institute Blacksburg, VA Don McLean DMD Chandler, AZ Submitted August 2019 DISCLAIMER The opinions and conclusions expressed or implied in this document are those of the researchers who performed the research. They are not necessarily those of the program sponsors; the Transportation Research Board; or the National Academies of Sciences, Engineering, and Medicine. The information contained in this document was taken directly from the submission of the authors. This material has not been edited by the Transportation Research Board. SPECIAL NOTE: This document IS NOT an official publication of the Transportation Research Board or the National Academies of Sciences, Engineering, and Medicine. A final, edited version of this document will be released at a later date. NCHRP Research Report 940 Pre-Publication Draft— Subject to Revision

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The lighting industry has changed dramatically over the past decade. The optical system design of legacy high-intensity discharge (HID) luminaires was restricted to the lamp, refractor, and reflector design, which had limits in the distribution of the light, controls, and adaptability. Roadway luminaires have moved beyond this design methodology to include the vast possibilities presented by solid-state lighting (SSL). At present, in the form of light emitting diodes (LED), SSL uses lower energy, reduces maintenance, improves color, and can be easily dimmed and controlled.

The TRB National Cooperative Highway Research Program's pre-publication draft of NCHRP Research Report 940: Solid-State Roadway Lighting Design Guide: Volume 1: Guidance develops more comprehensive guidelines in American Association of State Highway Transportation Officials (AASHTO)-standard format for the application of roadway lighting related to the widespread adoption of SSL, and identifies gaps in knowledge where possible future research will enhance these guidelines.

Also see this guide's accompanying pre-publication draft, NCHRP Research Report 940: Solid-State Roadway Lighting Design Guide: Volume 2: Research Overview.

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