SALUSLux: Automation for Safer Pedestrian Street Lighting at Intersections

Flanigan, Katherine A; Kavee, Korawich; Quick, Stephen L

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SALUSLux: Automation for Safer Pedestrian Street Lighting at Intersections

2025-07-31
By Flanigan, Katherine A ; Kavee, Korawich ; Quick, Stephen L

File Language:

English

Details

Creators:

Flanigan, Katherine A ; Kavee, Korawich ; Quick, Stephen L
Corporate Creators:

Carnegie Mellon University. Traffic21 Institute. Safety21 University Transportation Center (UTC)
Corporate Contributors:

United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:

Automation Intersections Light Emitting Diodes Lighting Configuration Luminaires Mobile Applications Open-source Simulation Tools Pedestrians Pedestrian Safety Photometric Analysis Photometry Pollution Simulation Street Lighting Light Pollution Visibility
Publication/ Report Number:

496
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report (July 1, 2024 – June 30, 2025)
Corporate Publisher:

Carnegie Mellon University. Traffic21 Institute. Safety21 University Transportation Center (UTC)
Abstract:

This study addresses the trade-off between pedestrian visibility, pedestrian safety, and light pollution in nighttime intersection lighting design by analyzing how combinations of light source characteristics (e.g., correlated color temperature, distribution type) and streetlight geometry (e.g., pole height, orientation, offset) affect safety and environmental outcomes. We developed SALUSLux, an open-source, Python-based simulation toolset that evaluates realistic lighting conditions using standardized photometric data, simulating 2,304 intersection scenarios across various spatial configurations and light sources. Results reveal that interaction effects between geometry and luminaire properties are critical, with optimized designs—particularly using lower-correlated color temperature sources and a 45° modified turbine configuration—achieving superior visibility and reduced light pollution. Some designs simultaneously maximized safety and environmental performance, challenging assumptions that brighter or high-correlated color temperature lighting is necessary. This work highlights the potential of tools like SALUSLux to enable data-driven, sustainable streetlighting solutions.
Format:

PDF
Funding:

69A3552344811, 69A3552348316
Collection(s):

University Transportation Centers
Main Document Checksum:

urn:sha-512:b52921eb7ef1fd1966d121d32162ca4bdb5c8f18310c96ebc85d4253dbf57cafde0413f04272c8644c54162c7df8f0d82a254a662bc580e891dbb9f62af40712
Download URL:

https://rosap.ntl.bts.gov/view/dot/86297/dot_86297_DS1.pdf
File Type:

[PDF - 2.26 MB ]

File Language:

English

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