The National Electrical Manufacturers Association (NEMA) published ANSI C136.1 American National Standard for Roadway and Area Lighting Equipment—Filament Lamps—A Guide for Selection.

This is a guide for the proper selection of filament lamps for use in roadway and area lighting equipment. C136.1-2012 includes updated reference documents and modernized terms in line with current industry terminology. Information covered can also be found in American National Standards ANSI C136.4, ANSI C136.5, ANSI C136.6, and ANSI C136.11.

ANSI C136.1-2012 may be purchased in a hard or electronic copy for $35 by visiting global.ihs.com, or contacting IHS by phone at 800-854-7179 (U.S. only) or 303-397-7956 (international).
 
NEMA is the association of electrical equipment and medical imaging manufacturers, founded in 1926 and headquartered in Arlington, Virginia. Its member companies manufacture a diverse set of products including power transmission and distribution equipment, lighting systems, factory automation and control systems, and medical diagnostic imaging systems. Worldwide annual sales of NEMA-scope products exceed $120 billion.