Last time I was at JP they had the same sign up as well.

But sign or not it is illegal to transport a Handgun in the State of Indiana without a CHL except for the reasons in bold at the bottom. Unfortunately the range is not one of them even if it is unloaded and in the trunk.

There is a lot of good information in the first part of this current thread "Indian law on handgun in car"

IC 35-47-2


Chapter 2. Regulation of Handguns





IC 35-47-2-1


Carrying a handgun without a license or by person convicted of


domestic battery


Sec. 1. (a) Except as provided in subsection (b) and section 2 of


this chapter, a person shall not carry a handgun in any vehicle or on


or about the person's body, except in the person's dwelling, on the


person's property or fixed place of business, without a license issued


under this chapter being in the person's possession.


(b) Unless the person's right to possess a firearm has been restored


under IC 35-47-4-7, a person who has been convicted of domestic


battery under IC 35-42-2-1.3 may not possess or carry a handgun in


any vehicle or on or about the person's body in the person's dwelling


or on the person's property or fixed place of business.


As added by P.L.311-1983, SEC.32. Amended by P.L.326-1987,


SEC.1; P.L.195-2003, SEC.6; P.L.98-2004, SEC.155; P.L.118-2007,


SEC.35.





IC 35-47-2-2


Excepted persons


Sec. 2. Section 1 of this chapter does not apply to:


(1) marshals;


(2) sheriffs;


(3) the commissioner of the department of correction or persons


authorized by him in writing to carry firearms;


(4) judicial officers;


(5) law enforcement officers;


(6) members of the armed forces of the United States or of the


national guard or organized reserves while they are on duty;


(7) regularly enrolled members of any organization duly


authorized to purchase or receive such weapons from the United


States or from this state who are at or are going to or from their


place of assembly or target practice;


(8) employees of the United States duly authorized to carry


handguns;


(9) employees of express companies when engaged in company


business;


(10) any person engaged in the business of manufacturing,


repairing, or dealing in firearms or the agent or representative


of any such person having in his possession, using, or carrying


a handgun in the usual or ordinary course of that business; or


(11) any person while carrying a handgun unloaded and in a


secure wrapper from the place of purchase to his dwelling or


fixed place of business, or to a place of repair or back to his


dwelling or fixed place of business, or in moving from one


dwelling or business to another.As added by P.L.311-1983, SEC.32.