IC 9-21-8-27: Stop or turn signals; hand or arm signals; signal lamps; exception for farm equipment; highway travel

Sec. 27. (a) Except as provided in subsection (b), a stop or turn signal required under this chapter may be given by means of the hand and arm or by a signal lamp or lamps or mechanical signal device.

(b) This subsection does not apply to farm tractors and implements of agriculture designed to be operated primarily in a farm field or on farm premises. A motor vehicle in use on a highway must be equipped with and a required signal shall be given by a signal lamp or lamps or mechanical signal device when either of the following conditions exist:

(1) The distance from the center of the top of the steering post to the left outside limit of the body, cab, or load of the motor vehicle exceeds twenty-four (24) inches.

(2) The distance from the center of the top of the steering post to the rear limit of the body or load of the motor vehicle exceeds fourteen (14) feet. This measurement applies to a single vehicle and a combination of vehicles.