CFR›Title 10›Chapter II›Part 431›Subpart M ContainsSections 431.221–431.222; Subject groups Energy Conservation Standards–Test ProceduresCorpusDaily eCFRDisplayed edition2026-05-07Last updated2026-05-07 Subpart M—Traffic Signal Modules and Pedestrian Modules Contents 431.221 § 431.221 Purpose and scope. 431.222 § 431.222 Definitions concerning traffic signal modules and pedestrian modules. Energy Conservation Standards Energy Conservation Standards Section 431.226 Test Procedures Test Procedures Sections 431.223–431.224 Source70 FR 60417, Oct. 18, 2005, unless otherwise noted. Previous L Subpart L—Illuminated Exit Signs Next N Subpart N—Unit Heaters