; and (2) may only include the use of a verbal warning if a single worker receiving such warning is within arms reach of the individual issuing such warning. 10. Certification of signal employees (a) In general Subchapter II of chapter 201 of title 49, United States Code, is amended by adding at the end the following new section: 20172. Certification of signal employees (a) Certification program Not later than 12 months after the date of enactment of the Rail Worker and Community Safety Act , the Secretary of Transportation shall promulgate regulations to establish a program requiring the certification of signal installation, repair, maintenance, and testing employees. (b) Updated plans In promulgating such regulations, the Secretary shall require that railroad carriers, contractors, and subcontractors submit, not later than 180 days after such regulations are finalized, updated training and qualification plans pursuant to section 20162, that take into account the regulations the Secretary issues under subsection (a) for signal installation, repair, maintenance, and testing employees. (c) Meaningful consultation Any railroad carrier, contractor, or subcontractor required to submit an updated plan under subsection (b) shall consult with, employ good faith, and use its best efforts to reach agreement with any nonprofit employee labor organization for employees covered by this section in the formation of said plan before submitting it to the Secretary for approval. (d) Authority To define term The Secretary shall have the authority to promulgate regulations regarding what the terms consult , employ good faith , and use its best efforts to reach agreement with mean and any necessary associated requirements for the purposes of carrying out subsection (c). . (b) Conforming amendment The chapter analysis for chapter 201 is amended by adding at the end the following: 20172. Certification of signal employees. . 11. Wayside detections technology (a) Wayside detection technologies defined Section 20102 of title 49, United