I believe you should take a year off and do every prereq you can get at a local college or university. a way to check that would be to go on a computer and pull up the local college, and the college you set your mind to long term. so for instance LTC (long term college) may have a prereq Bio 213 and maybe you LC (local college) has a Bio 217. you would call the LTC and say hey, does your Bio 213 line up with LC Bio 217. Most of the time they will say yes. It saves a LOT of money.
Training and concentration keep focused and stay in task
I believe the answer is: Four years
During the renewal process, the disabled drivers would receive a temporary paper that can be used in case the police ask for it before its done. If the drivers are caught with expired license, they would be subjected to traffic citation or some amount of fines.