PR 402 restricts correlated color temperature to create a warm, cohesive nightscape:
This range minimizes blue light pollution, protects nocturnal wildlife, and respects astronomical observatories in the desert.
Zero uplight is not a suggestion; it is a specification. Every luminaire must be full cutoff (BUG rating of 0 or 1 in the Uplight category) . Light spill above 90° horizontal is prohibited.
Abu Dhabi is a global leader in the UAE’s Net Zero 2050 initiative. PR 402 explicitly encourages:
PR 402 represents a maturity in Abu Dhabi’s urban planning journey. It signals that the emirate is no longer just building structures, but curating experiences.
For consultants and contractors, mastering the nuances of the Abu Dhabi Lighting Manual is essential not just for compliance, but for contributing to a legacy of sustainable urbanism. As technology evolves, these standards will continue to push the boundaries of what is possible, proving that the best lighting designs are the ones that respect both the people and the planet.
Are you working on a project that requires compliance with PR 402? Ensure your lighting design consultants are up to date with the latest DMT regulations to streamline your approval process.
Abu Dhabi Lighting Manual - PR-402 , represents far more than a technical document. It is the story of Abu Dhabi’s quiet revolution in the dark—a deliberate, scientific shift from harsh, energy-intensive yellow light to a sophisticated, sustainable nocturnal landscape.
Here is a deep story focusing on the evolution of this vital infrastructure. The City that Learned to See at Night pr 402- abu dhabi lighting manual
For decades, the streets of Abu Dhabi were defined by High-Pressure Sodium (HPS) lights. They created an orange, hazy glow, a common sight in desert cities. But behind the scenes, this approach was battling the clock. As Abu Dhabi accelerated toward its 2030 Vision
, traditional lighting was proving too costly to maintain, too inefficient to run, and too chaotic in its distribution. Chapter 1: The Invisible Dawn The story begins with the mandate to transform 42,600+ traditional fixtures into a "smart" city. The engineers behind
didn’t just want better bulbs; they wanted a new aesthetic. The goal was to bring the city's daytime beauty—its architecture and landscaping—into the night with clarity. They introduced LED technology
with specific color temperatures—2700K, 3000K, and 4000K. No longer just about "brightness," the new lighting focused on rendering color accurately , making roads safer and cities feel more vibrant. Chapter 2: The Geometry of Light (PR-402 Principles)
The PR-402 manual introduced strict, almost poetic, geometric constraints. The Silhouette Effect:
Lighting wasn’t just aimed downward; it was designed to create a "silhouette" of vehicles, allowing drivers to see obstacles earlier. The 5-Degree Rule:
Luminaires were restricted to a 5-degree tilt to minimize wasted light upward, reducing light pollution. The 1000mm Rule:
A specific, cleared "safe zone" was established around every pole, hardscaped to prevent maintenance issues. The Median Command: PR 402 restricts correlated color temperature to create
On major highways, light poles were moved to the median, creating a runway effect that guided drivers, rather than dazzling them. Chapter 3: The Secret Life of Trees
A poignant part of the story is the interaction between infrastructure and nature. PR-402 demands that in landscaped areas, lights must be placed precisely
trees, ensuring the canopy does not obstruct the illumination coverage. It was acknowledging that the city’s green heart was as important as its traffic flow. Chapter 4: The 76% Efficiency Dream
The ultimate triumph of PR-402, particularly as seen in pilot projects like in Sector E48
, was sustainability. The new standards weren't just brighter; they were 76% more efficient than the old system.
By utilizing wireless control systems and smart LED, the city now adjusts its own intensity based on traffic, dimmed to save energy in the small hours, and blazing with full clarity during peak times. Epilogue: The New Sky
Today, the PR-402 manual is not just on a bookshelf; it is alive on every street, tunnel, and underpass in Abu Dhabi. It is the quiet force that ensures when the sun sets, Abu Dhabi does not just turn on the lights—it paints with them. Key Technical Pillars: ADQCC Lighting Standard Application Focus: Roadway and Parking Safety AI responses may include mistakes. Learn more
The Abu Dhabi Lighting Manual (PR-402), specifically the latest Version 3.0 (July 2021), is the definitive technical standard for public lighting design within the Emirate. It establishes mandatory guidelines for the Department of Municipalities and Transport (DMT) to ensure energy efficiency, road safety, and sustainability. Key Technical Standards Are you working on a project that requires
Designers and contractors must adhere to specific performance metrics for LED installations:
Lighting Classes: Standardized levels (e.g., M2 for high-speed roads at 1.3–1.5 ; M4 for minor routes at 1.0 LED Specifications:
Color Temperature (CCT): Standard accepted colors are 2700K, 3000K, and 4000K.
Protection: Luminaires must meet high Ingress Protection (IP) and Impact Protection (IK) ratings.
Warranty: Minimum 10-year full warranty required for street and tunnel lighting. Physical Infrastructure:
Poles: Maximum bracket arm length is typically 1.5m with a maximum tilt angle of 5 degrees.
Clearance: A 1000mm clear area is required around pole centers, typically finished with hardscape or gravel. Scope of the Manual
PR-402 is divided into comprehensive sections covering the full lifecycle of a lighting project: Focus Area Section A & B Roadway, Parking, Tunnel, and Underpass Lighting Section C Street Lighting Poles and foundations Section D Public Lighting Management Systems (PLMS) & Dimming Section E & F Solar Street Lighting and Gantry/Signage Lighting Section G Light Pollution Mitigation (Dark Sky Policy compliance) Section H Project Submission & Verification Requirements Compliance & Submission PR-402 (Lighting Design Manual) | PDF - Scribd