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Roadway Lighting & Traffic Signals

Guides & Resources

Explore roadway lighting and traffic signal guides covering photometric design, LED conversion, signal modules, specification review and procurement. Articles connect engineering questions with applicable product and application resources.

Municipal lighting engineer reviews an existing HPS roadway installation, pole geometry and photometric plan.
Roadway Lighting & Traffic Signals
Johnny

HPS-to-LED Streetlight Conversion: Selection and Retrofit Guide

An HPS-to-LED streetlight conversion should not be selected by wattage alone. The appropriate LED luminaire depends on the light needed on the actual roadway or area, the optical distribution and mounting geometry, existing electrical and control conditions, and a verified photometric and commissioning plan.

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Conceptual nighttime campus network connecting paths, crossings, entrances, arrival points and route decisions.
Roadway Lighting & Traffic Signals
Ethan Peng

Campus Pathway Lighting Design: Planning and Accessibility Guide

Campus pathway lighting should be planned around the routes people use after dark, not selected as a stand-alone fixture exercise. A useful plan connects route hierarchy, visual tasks, wayfinding, accessible-route context, glare and spill control, controls, project-specific photometry, and documentation review.

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