N.Y. Comp. Codes R. & Regs. tit. 12, § 57.3 – Application.

(a) This Part (rule) shall apply throughout the State of New York to any employer, any agent of an employer who supervises employees, self-employed individuals, independent contractors having no employees and homeowners, subject to the exceptions set forth in subdivision (b) of this section.
(b) The provisions of this Part (rule) shall not apply to:
1. (1) the construction, reconstruction, operations, and maintenance of overhead electrical conductors and their supporting structures and associated equipment by authorized and qualified electrical workers;
2. (2) the authorized and qualified employees of any person engaged in the construction, reconstruction, operation, and maintenance of overhead electrical circuits or conductors and their supporting structures and associated equipment of rail transportation systems or electrical generating, transmission, distribution, and communication systems; and
3. (3) motor vehicle transportation across or along a public road or highway where the combined vehicle and load is not at such time in excess of 13½ feet high and 13 feet wide. Note:
  Note:
  The exception set forth in paragraph (b)(2) of this section, when applied to railway systems, shall be construed as permitting operation of standard rail equipment, which is normally used in the transportation of freight or passengers or both and the operation of relief trains, or other equipment in emergencies, or in maintenance of way service, within dangerous proximity of any high-voltage conductor of such railway system. Normal repair or construction operations within dangerous proximity of any high-voltage conductor shall be prohibited under this Part unless performed by properly qualified and authorized persons or employees under the direct supervision of an authorized person familiar with the hazards involved, unless there has been compliance with the safety provisions set forth in this Part.