Quoting Connecticut Statutes, Sec. 14-298. State Traffic Commission.
There shall be within the Department of Transportation a State Traffic Commission. Said Traffic Commission shall consist of the Commissioner of Transportation, the Commissioner of Public Safety and the Commissioner of Motor Vehicles. For the purpose of standardization and uniformity, said commission shall adopt and cause to be printed for publication regulations establishing a uniform system of traffic control signals, devices, signs and markings consistent with the provisions of this chapter for use upon the public highways. The commissioner shall make known to the General Assembly the availability of such regulations and any requesting member shall be sent a written copy or electronic storage media of such regulations by the commissioner. Taking into consideration the public safety and convenience with respect to the width and character of the highways and roads affected, the density of traffic thereon and the character of such traffic, said commission shall also adopt regulations, in cooperation and agreement with local traffic authorities, governing the use of state highways and roads on state-owned properties, and the operation of vehicles including but not limited to motor vehicles, as defined by section 14-1, and bicycles, as defined by section 14-286, thereon. A list of limited-access highways shall be published with such regulations and said list shall be revised and published once each year. The commissioner shall make known to the General Assembly the availability of such regulations and list and any requesting member shall be sent a written copy or electronic storage media of such regulations and list by the commissioner. A list of limited-access highways opened to traffic by the Commissioner of Transportation in the interim period between publications shall be maintained in the office of the State Traffic Commission and such regulations shall apply to the use of such listed highways. Said commission shall also make regulations, in cooperation and agreement with local traffic authorities, respecting the use by through truck traffic of streets and highways within the limits of, and under the jurisdiction of, any city, town or borough of this state for the protection and safety of the public. If said commission determines that the prohibition of through truck traffic on any street or highway is necessary because of an immediate and imminent threat to the public health and safety and the local traffic authority is precluded for any reason from acting on such prohibition, the commission, if it is not otherwise precluded from so acting, may impose such prohibition. Said commission may place and maintain traffic control signals, signs, markings and other safety devices, which it deems to be in the interests of public safety, upon such highways as come within the jurisdiction of said commission as set forth in section 14-297. The traffic authority of any city, town or borough may place and maintain traffic control signals, signs, markings and other safety devices upon the highways under its jurisdiction, and all such signals, devices, signs and markings shall conform to the regulations established by said commission in accordance with this chapter, and such traffic authority shall, with respect to traffic control signals, conform to the provisions of section 14-299.