Customer Service:
Mon - Fri: 8:30 am - 6 pm EST


IES LM-71-14

IES Approved Guide: Photometric Measurement of Tunnel Lighting Installations (revised and consolidated by ANSI/IES RP-8-18)

This Lighting Measurements Testing & Calculation Guide defines adequate and uniform procedures for measuring and reporting the photometric characteristics of tunnel lighting installations. The measurement of those factors that determine the performance of tunnel lighting installations are specifically related to ANSI/IES RP-22-11 American National Standard Practice for Tunnel Lighting. Included in this guide are specific luminance and illuminance measurement methods applied to tunnels and the location of test points for these measurements. This guide was reviewed by both the IES Testing Procedures Committee and the Tunnel Lighting Subcommittee of the IES Roadway Lighting Committee.

Content Provider
Illuminating Engineering Society of North America [IESNA]


As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.