Indiana Code - Motor Vehicles - Title 9, Section 9-21-9-4

Flashing lamps; requirements

Sec. 4. When a slow moving vehicle described in section 1 of this
chapter is moved, operated, or driven on a highway at a time or under
circumstances during which the use of lighted lamps on vehicles is

required under this article, the slow moving vehicle must display, in
addition to the slow moving vehicle emblem, a red or an amber
flashing lamp mounted at a height as low as practicable that is visible
from a distance of not less than five hundred (500) feet to the rear.
The red or amber flashing lamp may be used at times other than
when lighted lamps are required. A double-faced flashing lamp may
be used, displaying amber light to the front and red or amber light to
the rear.

As added by P.L.2-1991, SEC.9.

Last modified: May 27, 2006