Conn. Gen. Stat. § 13b-228
(Formerly Sec. 16-75c). Tax exemption projects.
(a) Railroad track or railroad facility improvement projects in this state. Allowable costs shall include design, inspection and construction of projects including, but not limited to, the maintenance, rehabilitation or construction of tracks, bridges, stations, or platforms or the acquisition or rehabilitation of equipment used exclusively in this state.
(b) Light density freight line service preservation, in this state, where the revenue and variable cost of such lines create the potential for abandonment. Such preservation means the railroads' assumption of the deficit cost of the operation of such a line and shall be defined as one hundred ten per cent of the variable cost to provide service, minus the revenues generated by such a line.
(c) Intercity rail passenger service expansion in this state. Such expansion means Amtrak's assumption of the operating deficit directly attributable to the passenger train service which is additional to the service defined in the Amtrak schedule dated October 28, 1984.