There are several ways to approach this and as such it really depends on how receptive they are to having this discussion and how open minded they are to giving up this important symbol of their independence.  If you have a good mutually respectful relationship with your parent, honestly sharing your concerns is always the best place to start. If they are very closed to the idea, many people respond well to seeing the danger in what they will lose if they have an accident (independence, finances, mobility etc.) For a parent that wants to leave an inheritance, pointing out that they could lose their life savings in a wrongful accident suit may be a good motivator.  For an unsafe senior that refuses to accept or is unaware of their lack of ability, taking a note from their Dr. (indicating their potential for lack of driving safety) to the Dept. of Licensing, which will cause them to send a notice for a driving test, may be the only way to get your parent to surrender their license.