Ind. Code § 8-2-21-1
(e) The term "overcharges", as used in this section, means charges for the transportation services in excess of those applicable thereto under the tariffs lawfully on file with the Indiana department of transportation.
Formerly: Acts 1941, c.151, s.1; Acts 1961, c.110, s.1. As amended by P.L.59-1984, SEC.118; P.L.89-1985, SEC.11; P.L.18-1990, SEC.33.