AASHTO GL-7: Roadway Lighting Design Guide, 7th Edition (2018)

AASHTO GL-7: Roadway Lighting Design Guide, Seventh Edition (2018) provides comprehensive guidance on the planning, design, and implementation of roadway lighting systems. This edition reflects current engineering practices, safety standards, and lighting technologies to enhance visibility, energy efficiency, and operational reliability across modern transportation networks.

Highlights:

• Design principles covering illuminance, luminance, uniformity, and glare control
• Guidance on developing master roadway lighting plans and policies
• Recommended lighting levels for highways, streets, intersections, and pedestrian zones
• Design criteria for tunnels, underpasses, and bridges
• Considerations for temporary lighting in work zones and construction areas
• Evaluation of emerging technologies such as adaptive lighting and smart controls
• Discussion on lighting management systems and energy-efficient solutions
• Environmental impact assessments and aesthetic integration strategies
• Standards for pole placement, maintenance access, and safety
• Support for decision-making with traffic data and community planning considerations

Who It’s For:
An essential reference for transportation agencies, civil engineers, and planners responsible for roadway lighting design and policy development.

GL-7-2018