Is your tunnel emergency lighting NFPA 130-ready?

1. What is the maintained illuminance at the lowest point of your tunnel egress path today?

NFPA 130 requires 0.25 fc minimum. Modern operations target 5 fc.

2. What is the max-to-min uniformity ratio across your tunnel?

Lower is better. 50:1 means dark patches; 3:1 is consistent illumination.

3. Do your egress luminaires include integrated 1-hour emergency battery backup, per NFPA 130?

4. When did you last commission and verify emergency-mode performance under load?

5. What's the typical age of fixtures in your tunnel?

6. If a driver fails today, can you replace it without removing the entire fixture?

90% of LED luminaire failures originate in the driver. Modular access matters.

7. What's your average time per fixture for a maintenance event during track-access windows?

8. What battery chemistry does your emergency lighting use?

In sealed underground environments, failure mode matters as much as runtime.

9. Can your operations team see real-time fixture health (failures, dimming events, battery state) from a central dashboard?

10. Is your egress lighting integrated with a 3-step emergency dimming / consequence-management protocol?

11. Do you have current photometric data (IES files) for the as-installed system?

12. Is a tunnel lighting upgrade in your current 5-year capital plan?