What it is
Dementia gradually affects the judgment, reaction time, spatial awareness, and divided attention that safe driving depends on, often before the person behind the wheel, or the family riding along, fully register how much has changed. Because driving represents independence and identity as much as transportation, this rarely stays a simple logistics conversation, and pushback is normal, not a sign you're handling it wrong.
Signs worth paying attention to
The guide doesn't list specific warning signs, so treat these as common-sense flags worth raising with the physician, not a diagnostic checklist.
Getting lost on routes they've driven for years.
New dents or scrapes on the car, or reports of close calls.
Hesitation or confusion at intersections and traffic signals.
Slower reactions or trouble managing several things at once while driving.
Family anxiety about riding with them, even if nothing has happened yet.
What helps
Get an objective assessment. An occupational therapist who specializes in driver rehabilitation can evaluate skills you can't test yourself.
Loop in the physician directly. A doctor's recommendation carries authority a family member's concern usually doesn't.
Act on impairment, not on an accident. Waiting for a crash to justify the conversation raises the stakes for everyone.
Offer a real alternative. A concrete plan for getting where they need to go makes the change easier to accept.
What to avoid
Relying only on your own observations. An outside, credentialed opinion holds more weight and less blame.
Waiting for a crash before acting on clear signs of impairment.
Framing it as taking something away instead of offering a transition plan.
Expecting it to land the first time. This conversation is often revisited more than once, and that's normal, not failure.
When the conversation gets hard
This conversation is one of several the guide calls out as necessary but rarely easy, alongside finances and future care planning. Handling it early and with the physician's support tends to go better than waiting for a crisis.
This is one piece of the full guide, "Diagnosed With Dementia: Now What?" Section 7 covers the driving conversation, along with finances and future care planning, in full.