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Tunnel Lighting

Application guide for Tunnel Lighting


Tunnel lighting design must balance safety, comfort, energy efficiency, and compliance with regulatory standards as below of critical requirements:


1. Brightness and Illuminance Levels


Zone-Specific Illumination:


Tunnels are divided into zones (entrance, transition, interior, exit) with

distinct lighting requirements. For example:

Entrance/Transition Zones: Higher brightness to mitigate the "black hole effect" and ensure driver adaptation .


Interior Zone: Uniform illumination to maintain visibility without causing glare or fatigue .


Exit Zone: Gradual reduction in brightness to avoid the "white hole effect" .


Glare Control:

Luminaires must minimize glare through precise beam angles and asymmetric

optics to focus light on the road surface .


2. Energy Efficiency and Sustainability


High-Efficiency Luminaires: LEDs with high luminous efficacy and minimal light spillage are prioritized.

For example, guided optics technology improves efficiency by 50% compared to conventional designs .

Smart Controls:


Systems reduce energy consumption by 30–60% through dynamic dimming and occupancy-based activation .


3. Emergency Lighting and Safety Protocols


Emergency Power Supply:


Uninterruptible power supplies (UPS) ensure lighting remains operational for ≥30 minutes during outages .

Evacuation Guidance: Escape routes and exits require illumination levels 3–5 times higher than adjacent lanes .


Green flashing exit signs with ≥150 cd/m² intensity guide evacuations in smoke-filled environments .


Driver Physiology:


Metrics like pupil area change rate, heart rate variability, and gaze duration are used to evaluate comfort. Optimal brightness (e.g., 2.5 cd/m²) balances

safety and comfort .


Practical Implementation Tips


Adopt Modular Systems: Scalable designs with plug-and-play components simplify upgrades and reduce downtime .


By integrating these requirements,

tunnel operators can enhance safety, reduce energy costs, and comply with evolving standards. For further details, refer to the SunLumin Application example.

 

APPLICATION GUIDES AND EXAMPLES