1.a. A common carrier subject to this chapter shall not charge more for the transportation of persons or property than a fair and just rate or charge.b. A common carrier shall not:(1) Charge more for the transportation of persons or property for a shorter distance than for a longer distance in the same direction on the same route.(2) Charge more for a through rate than the aggregate of the intermediate rates.2. However, upon application by a common carrier, the department may in special cases and after investigation prescribe the extent to which the carrier is relieved from compliance with this section.C97, §2126; C24, 27, 31, 35, 39, §8049; C46, 50, 54, 58, 62, 66, 71, 73, 75, § 479.14; C77, 79, 81, § 327D.13; 81 Acts, ch 22, §2286 Acts, ch 1245, §1961; 2010 Acts, ch 1061, §180