Scope

1.1 This Standard specifies photometric performance requirements for highmast luminaires that are used for roadway applications.

1.2 The following light sources are addressed in this Standard:
a) clear HPS lamp
b) clear metal halide lamp
c) LED
Note: Future editions of this Standard might include other light sources.

1.3 This Standard applies to highmast luminaires used along freeways in standard layout arrangements.

1.4 This Standard is based on
a) average luminance, average illuminance, luminance uniformity ratio, illuminance uniformity ratio, and veiling luminance ratio as defined in ANSI/IES RP-8
b) rated lamp watts and rated lamp lumens for HID sources
c) rated luminaires watts and rated luminaires lumens for LED sources
d) absolute photometry for LED sources as per IES-LM 79
e) light trespass criteria (eye illuminance and luminous intensity) as per IES TM-11