Indiana Code Title 8. Utilities and Transportation § 8-8-7-7

Sec. 7. The Indiana department of transportation shall investigate the conditions and efficiency of cabooses in use on the railroads in this state, and, if found upon investigation, that it is impossible for a railroad company to comply with sections 2 through 6 of this chapter, the department may grant to the company the right to construct a caboose which, in their judgment, will be safe and convenient for the employees and traveling public.  The department may not grant the permission of any railroad company for constructing a caboose that has less than two (2) four-wheel trucks.