SDCL § 49-17-25: Participation required from users of improved service.

Agreements entered into requiring expenditure of state funds shall also require the expenditure of funds by rail users benefiting from the proposed improvements and the expenditure of funds or the provision of services, by the railroad corporation party to such agreement. The ratio of participation by state rail users and railroad corporations shall be determined by the Department of Transportation for each branch line or branch line segment to be upgraded.