N.Y. Comp. Codes R. & Regs. tit. 17 § 131.22
Permittees are subject to applicable provisions of Part 127 of this Title. Utilities are not eligible for participation in the department's blanket policy. Protective public liability insurance must be provided as required by section 127.1 of this Title, unless, with respect to municipalities and public service corporations, an undertaking is furnished in a form and amount acceptable to the department. Failure to maintain such insurance or undertaking, or insurance required by the Workers' Compensation Law immediately causes invalidation of a permit. Other than specifically provided for by law, the department shall owe no duty or obligation to any utility with respect to utility facilities within the department's rights-of-way.
N.Y. Comp. Codes R. & Regs. Tit. 17 § 131.22