Ind. Code § 9-21-8-11
Whenever a roadway has been divided into three (3) or more clearly marked lanes for traffic, the following rules apply:
(1) Upon a roadway that is divided into three (3) lanes, a vehicle may not be driven in the center lane except under any of the following conditions:
(2) Official signs may be erected directing slow-moving traffic to use a designated lane or allocating specified lanes to traffic moving in the same direction. A person who drives a vehicle shall obey the directions of each sign.
[Pre-1991 Recodification Citation: 9-4-1-72.]
As added by P.L.2-1991, SEC.9. Amended by P.L.164-2018, SEC.16.