Mo. Rev. Stat. § 319.088
319.088 Exemptions from law.
319.088. Exemptions from law. — Sections 319.075 to 319.090 shall not apply to:
(1) Construction, operation or maintenance of power lines and telecommunications lines or authorized attachments thereto by an authorized person as defined in section 319.078 ; or
(2) Governmental entities responding to an emergency situation.
(L. 1991 S.B. 214 & 264 § 6)