§68-2357.23.

§68-2357.23.
   
   A. For taxable years beginning after December 31, 1992, there shall be
   allowed a one-time credit against the income tax imposed by Section
   2355 of this title for investments in qualified clean-burning train
   locomotive fuel property.
   
   B. As used in this section, "qualified clean-burning train locomotive
   fuel property" means:
   
   1. Equipment installed to modify a train locomotive which is propelled
   by diesel or other means so that the train locomotive may be propelled
   by compressed natural gas, liquefied natural gas or liquefied
   petroleum gas if such installation occurs in the State of Oklahoma;
   and
   
   2. Property which is directly related to the delivery of compressed
   natural gas, liquefied natural gas or liquefied petroleum gas into the
   fuel tank of a train locomotive propelled by such fuel including
   compression equipment and storage tanks for such fuel at the point
   where such fuel is so delivered but only if such property is not used
   to deliver such fuel into any other type of storage tank or receptacle
   and such fuel is not used for any purpose other than to propel a train
   locomotive.
   
   C. The credit provided for in subsection A of this section shall be
   fifty percent (50%) of the cost of the qualified clean-burning train
   locomotive fuel property.
   
   D. In cases where no credit has been claimed pursuant to subsection C
   of this section and in which a train locomotive is purchased in the
   State of Oklahoma by a taxpayer with qualified clean-burning train
   locomotive fuel property installed by the manufacturer of such train
   locomotive and the taxpayer is unable or elects not to determine the
   exact basis which is attributable to such property, the taxpayer may
   claim a credit in an amount not exceeding the lesser of ten percent
   (10%) of the cost of the train locomotive or One Thousand Five Hundred
   Dollars ($1,500.00).
   
   E. If the tax credit allowed pursuant to subsection A of this section
   exceeds the amount of income taxes due or if there are no state income
   taxes due on the income of the taxpayer, the amount of the credit not
   used as an offset against the income taxes of a taxable year may be
   carried forward as a credit against subsequent income tax liability
   for a period not to exceed three (3) years.