Tunnel entrance Luminance Meter
Smart Tunnel Lighting System x Signify (15 Tunnels)
70%
Energy Savings
10%
Total Cost Savings
Introduction
Tunnel lighting ensures safety and efficiency. Signify, a global leader, partnered with LIDlight to enhance Signify tunnel lighting systems in Taiwan. LIDlight’s image-based luminance meter ILM delivers CIE 88 tunnel luminance meter precision, creating safer tunnels with an energy-efficient tunnel lighting tool. Discover how this collaboration advances sustainable infrastructure.
The Challenge of Tunnel Lighting
Tunnels demand precise lighting. At entrances, rapid light changes risk glare, threatening safety. The CIE 88 tunnel lighting standard emphasizes threshold zone accuracy for visual adaptation. Traditional meters lack real-time precision, causing over-lit tunnels, high costs, and frequent maintenance. Signify and LIDlight tackled these issues with innovation.
Why Signify Chose LIDlight’s ILM
Signify sought a cutting-edge solution to enhance its tunnel systems. LIDlight’s image-based luminance meter ILM was the ideal choice for its advanced capabilities:
- CIE 88 Compliance: ILM, a tunnel lighting compliance meter, meets CIE 88 tunnel luminance meter standards, providing accurate luminance data for threshold and transition zones.
- High Precision: With ±2% accuracy at 2856K, ILM delivers reliable measurements, minimizing visual discomfort.
- Dual Functionality: ILM doubles as a security camera, offering surveillance when not measuring luminance, enhancing tunnel safety.
- Professional Services: LIDlight offers tunnel lighting simulations, having used ILM to measure over 80 tunnel and road lighting projects for public agencies, adhering to CIE 140 standards. With deep expertise in regulations and systems, LIDlight provides customized designs tailored to specific needs.
This alignment made ILM a cornerstone of Signify tunnel lighting projects, driving efficiency and safety.
Real-World Impact: A Taiwanese Tunnel Case
In a Taiwanese highway tunnel project, Signify implemented ILM with remarkable results:
70% Energy Savings: By optimizing luminance to CIE 88 standards, ILM reduced power consumption by 70% compared to traditional systems, lowering operational costs.
Improved Safety: ILM’s tunnel entrance luminance meter ensured smooth light transitions at entrances, reducing glare and improving driver comfort.
Streamlined Maintenance: Single-shot measurements pinpointed underperforming luminaires, cutting maintenance time by 50%.
How ILM Works
The image-based luminance meter ILM redefines tunnel lighting:
Flexible Installation: Its adjustable field of view adapts to any tunnel layout, eliminating the need for extra infrastructure.
Standards-Compliant Precision: ILM measures luminance with pinpoint accuracy per CIE standards, while its software filters out interference from high-reflectance objects like scaffolding or signs, ensuring reliable data.
Smart Surveillance: When not measuring, ILM monitors traffic, adding value to tunnel management.
Benefits for Stakeholders
This partnership delivers value across the board:
Engineers: Accurate data simplifies lighting design and upkeep.
Drivers: Seamless light transitions enhance safety and comfort.
Governments: Reduced energy costs promote sustainable infrastructure.
With CIE 88-compliant luminance meter precision, Signify and LIDlight set a new benchmark for tunnel illumination.
Looking Ahead
The Signify x LIDlight collaboration is paving the way for smarter tunnels. Future projects may integrate IoT for real-time lighting control, building on ILM’s smart tunnel lighting solutions. As Taiwan adopts these innovations, global tunnels could follow suit.
Conclusion
Signify and LIDlight are reshaping CIE 88 tunnel lighting with the image-based luminance meter ILM. From 70% energy savings to safer driving, this partnership drives progress. Upgrade your tunnel lighting today—visit LIDlight’s ILM Product Page or contact us for a demo.

