The power to regulate the speed of railroad trains within the limits of cities and boroughs shall be vested exclusively in the Commissioner of Transportation.
Conn. Gen. Stat. § 13b-348
(1949 Rev., S. 5546; P.A. 75-486, S. 1, 69; P.A. 77-614, S. 571, 610.)
See Sec. 13b-342 re general orders regarding crossings.