How to Buy

Outdoor DOT Solutions

In the early 1970s, Holophane invented the first prismatic glass high-mast optics and a lowering device for roadway and area lighting, and we have been serving DOTs with innovative solutions ever since.  

Outdoor Lighting and Controls

Our DOT solutions range from high-mast LED luminaires, poles and lowering devices to offset cobra-head applications and networked controls — each designed to increase your operational efficiency.

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Outdoor DOT Applications

High Speed Roadways
From our HMAO LED high-mast series to our Mongoose® LED offset cobra-head luminaires, Holophane provides solutions with high application efficacy to maximize pole spacing and reduce operating costs.
Our durable high-mast systems are engineered to maximize pole spacing while providing high uniformity and visual clarity in interchange applications where potential driver conflict is at its highest.
Tunnels and Underpasses
The Holophane brand offers the industry's most technologically advanced luminaires available for tunnel and underpass lighting for a wide variety of roadway and rail applications.
From cobra heads to decorative luminaires, we offer a broad range of robust roadway lighting solutions that are engineered to withstand the unique demands of bridge lighting.
Sign Lighting
Our durable Sign-Vue® LED II luminaires provide a lasting, energy-efficient solution for illumination of roadway wayfinding and direction signage with up to 20 years of expected service life.

Outdoor Featured Products



The innovative Holophane HMAO LED III uses a modular chip design to provide a light-weight solution with up to 77% energy savings and 50% maintenance savings over traditional HID high-mast products.

Mongoose® LED

The Mongoose LED roadway and area lighting luminaire provides significant energy and maintenance savings compared to HID luminaires and offers the ultimate in application flexibility.

TunnelPass LED™ Medium

With energy savings up to 50% over HID and expected service life of over 20 years, our TunnelPass LED series of luminaires excels at meeting the extreme challenges associated with tunnel lighting applications.



Streets & Highways Lighting Guide

Comprehensive guide to outdoor LED lighting and controls solutions for a variety of street & highway applications

Maine DOT I-295 Case Study

Case study featuring the Holophane HMAO™ LED luminaire deployed by Maine DOT on I-295.

WV DOT Charleston Case Study Video

Learn how the Holophane HMAO™ LED high mast solution helped West Virginia to improve their roadway lighting.

Bay Bridge Tunnel Case Study Video

Case study featuring the Holophane TunnelPass LED™ luminaire used by Caltrans in the Bay Bridge Tunnel on I-80 at Yerba Buena Island