Indiana has a very easy form. It does have a section the doctor has to fill out. It also has a section that the doc says yours is a permanent or temporary disability. Temporary would be broken foot in cast or something like that. Good luck. Indiana allows you to have two tags. So I got a license plate and a hanging placard. Oh, I think I have to renew it like every five years. If it is a permanent disability, all you have to do is go to DMV and renew it, no more paper work for doctor.