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                Media ContactsMenu FHWA Highway Safety Programs Home
                        FHWA Lighting Handbook August 2012


            
            In This Section
        Other Safety Areas
                Road Diets
                Lighting and Visibility
                                Overview
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                9 Summary
There are significant resources available for application and considerations relating to street and roadway lighting. These resources are constantly changing as research and practice evolve in the field of outdoor lighting. Much is left to learn about optimizing visibility for the roadway user while balancing the impacts and best cost/benefit of available safety improvements.

This handbook, with the research and documents referenced within it, provides a solid base for policy makers, owners, designers, and installers in the decision making process. Much is changing in this field. Research is ongoing in the areas of mesopic vision, adaptive lighting, spectral impacts to visibility/contrast, and better predictive models. New lighting sources continue to develop and emerge which are changing the way roadway lighting design is approached and designed. The user of this handbook is encouraged to remain current on the resources provided by FHWA, AASHTO, IES, CIE, and other technical organizations.
      
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      ‹ 8 Related Roadway Systems
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                    References ›
                
                Book:FHWA Lighting Handbook August 2012
              Policy and Guidance
                2 Federal Guidance and Recommendations Regarding Roadway Lighting
                Basic Terms and Concepts Related to Roadway Lighting
                3 Vision and Fundamental Concepts
                Warranting Criteria
                4 Analysis for Lighting Needs
                5 Considerations Concerning Lighting Systems
                6 Lighting System Selection
                Lighting Application Considerations
                7 Lighting Application
                Other Systems and Issues Related to Roadway Lighting
                8 Related Roadway Systems
                9 Summary
                References
                Glossary of Terms U.S. DEPARTMENT OF TRANSPORTATION

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