How much influence does dad's doctor have on whether or not he can continue driving?

I don't want your father behind the wheel.
Some of us have children just now driving. I understand he doesn't want to lose his freedom, but I doubt he'd want anyone to lose their child either.
Flexability is important. I am sure you have already told him this, and he doesn't think HE will ever cause an accident or death. None of us PLAN to do that. He isn't either.

Try to explain to him that there are a bunch of crazy drivers out there, he needs some really quick reflexes to dodge them.
And then...take away his keys. Disable the car. drain the fuel. cut the fan belt. remove a hose, let the air out of his tires. lock the steering wheel...
Save a life.
Good luck. My mom's neurologist is doing the deed soon, and no one but me believes that her doctor will really take her license away. Then we must disable the car, because she won't care (or remember) if she can legally drive or not.
We are adults too. Even if our parent's refuse to ever acknowledge it. Do what you know you need to do.

That is the question my Mom is 90 and her doc thought it was great that she still drives the jerk my husband was unfit to drive none of his numerous doc mentioned my son and I said no more. I really think at some age we all need to have to take a driving test what age I do not know my MIL was a horibble driver at 80 my mother at 90 drives well in some cities if an elder is found driving poorly the police officer cane take off the road right there and have someone pick them to take home - if there is no bus line it is a hardship for the elderly to get around and if you have a neighbor who should not be driving offer to take them from time to time and an adult child has to bite the bullet and say they can not drive.

I believe the doctor will have quite a bit of influence.

Best,
Jackie

Welcome to the stage of life called "role reversal" Yes, your Dad was always the authority figure ready to guide you through the perils of growing up. He might have taken YOUR keys away that time you came home very late with liquor on your breath. Now you are all grown up but, in his eyes you are still the child. Now you have to act like an adult even though he may not be ready to accept that reversal. Don't wait for the doctor to act. Do what you know is right. Take away his keys and disable the car. Like a child, he will take a tantrum and rage for awhile, but hold fast. You are the adult in this situation. He is acting like a child. Don't let him get away with it. Offer to drive him places whenever you can but do so only if he lets go of the anger and behaves himself.

It's not the doctor's decision to let his patient keep on driving or not. The doctor can only recommend. It is up to you, or his next of kin, or responsible party to take away his driver's liscence and his keys.

The Physician can sign the papers for the Secretary of State (or Driving Bureau for your county), to have his driving evaluated by them. You can go tomorrow to get a form to fill out, and take to his doctor. But you still have to act, because it's a long process before they actually make a determination. We, as children, can't "take away" their lisence, but can ask that he be evaluated. Get your physician's help.

I also went to the local police. They told me to disable my parent's car. We thought we did, only to find out it backfired. And my Mom was driving with a suspended lisence, and Dad when he shouldn't have been. I also took the keys away, thinking that would thwart their efforts. Warning: they can be real clever, and get new keys made, etc. I also had to deal with the anger, and fear (living 200 miles away).

It literally took several months before the Secretary of State acted. They sent a letter to my folks, asking them to appear for a driving test. If they don't appear, it's an automatic loss of license. Since Dad's doctor wrote that he didn't think Dad was capable of driving, they clipped the corner on his right away. Mom didn't show up for her test, and we just drove her car away. Boy, were they both angry!!! By then, I was Guardian, and knew I had acted in the best interest of all concerned. It was not easy, but had to be done. I've since sold both vehicles. Due to that, and their failing health, neither will ever drive again.

Good for you you probably saved lives and maybe theirs-my husband's aunt 92 was upset because someone had stollen her pocketbook which she was checking out meat in a store and soon after while driving she had an accident the other driver had minor injuries she never recovered from her injuries and died soon after.