Indiana Code Title 9. Motor Vehicles § 9-18.1-4-4

(1) For a tractor, a dump truck, or a truck with a rear-mounted forklift or a mechanism to carry a rear-mounted forklift or implement, upon the front of the vehicle.

(2) Except as provided in subsections (c) and (d), for every other vehicle, upon the rear of the vehicle.

(1) securely fastened, in a horizontal and upright position that displays the registration expiration year in the upper right corner, to the vehicle for which the plate is issued:

(2) maintained free from foreign materials and in a condition to be clearly legible; and

(3) not obstructed or obscured by tires, bumpers, accessories, or other opaque objects.

(1) in the manner required under subsection (a) for the type of vehicle on which the interim license plate is displayed; or

(2) in a location on the left side of a window that is:

(1) that is securely affixed in the upper right corner of the license plate; and

(2) that covers the previous registration expiration year.