Registrants are limited to two disabled placards. Regarding the plates, only one free disabled plate can be issued per registrant if they qualify for the free one. For the disabled plate that requires a fee, there is no limit on plates.
Disabled veterans can have more than two disabled plates, but only one plate is free, unless they were part of the group that was grandfathered in to receive two free. Additional plates may be purchased at the regular fee.