In Ohio, of businesses that are not legally required to ban carry, car dealers are by far the most likely--Possibly as many car dealers as all other businesses combined, I'd guess 20% or more post in my area. We just got rid of our stupid "open carry or locked case only" car carry laws--I'm wondering if this is why so many of them post. In states that do have private 'no carry' signs with legal force, (and never had our insane car carry laws) are car dealers more likely to post than other businesses?