Parent Bully

I have become a parent bully. When I suggest something sensible and my parents are wishy washy about it, I bully them into doing what is right. Since they are in New York for at least the next three months and it gets dark out early, I do not want my father driving at night. I want them to call a car service to take them back and forth to his medical treatments. First they agreed, then they said that they were going to do their regular routine. That is when I went into bully mode. I argued that there was no way I would allow them to drive at night and stayed on the phone as they called a car service for today. I will set up a three day schedule with a local car service and make sure that they are safe. I hate to be harsh, but I need to do the right thing.