How do I know I have enough room to back down driveway?

Start from the right to left side where the yard is located. You may need to make that turn tighter and go over the some of the front yard but I could do it as long as I had a spotter. Start as close as you can to the across the street sidewalk. If you have a good relationship with your across the street neighbor you straighten it out using part of his driveway. Easy. I am sure a few maneuvers will be in order.