(1) There shall be allowed to corporate employers a deduction from Colorado gross income, to the extent not previously deducted in arriving at Colorado gross income, equal to the employer's contribution to:

(a)

(I) Free or partially subsidized ridesharing arrangements for employees, including, but not limited to, providing vehicles for such arrangements, cash incentives (not to exceed the value of such transportation) for participation in ridesharing arrangements, and the payment of all or part of the administrative cost incurred in organizing, establishing, or administering a ridesharing program.

(II) For the purposes of this section, "ridesharing arrangement" means the vehicular transportation of passengers traveling together primarily to and from such passengers' places of business or work or traveling together on a regularly scheduled basis with a commonality of purposes if the vehicle used in such transportation is not operated for profit by an entity primarily engaged in the transportation business and if no charge is made therefor other than that reasonably calculated to recover the direct and indirect costs of the "ridesharing arrangement", including, but not limited to, a reasonable incentive to maximize occupancy of the vehicle. However, nothing in this subparagraph (II) shall be construed as excluding from this definition an arrangement by an employer engaged in the transportation business who provides ridesharing arrangements for its employees. The term includes "ridesharing arrangements" commonly known as carpools and vanpools; except that this term does not include school transportation vehicles operated by elementary and secondary schools when they are operated for the transportation of children to or from school or on school-related events.

(b) Free or partially subsidized mass transit tickets, tokens, passes, or fares for use by employees in going to and returning from their places of employment.