Conn. Gen. Stat. § 43-44: Exemptions.

The provisions of sections 43-36 to 43-43, inclusive, shall not apply to interstate tank car and transport truck deliveries to bulk storage, or to public utility systems using pipes or other fixtures in the public highways or streets for the transmission of liquefied petroleum gas and operating under the jurisdiction of the Public Utilities Regulatory Authority of this state, or to any public service company whose operations are subject to the jurisdiction of the Public Utilities Regulatory Authority.