I ride a bike, but I have one challenge. I can't tell how far I am away from things on my side in order to judge distance. For example, if I'm riding on the sidewalk (on busy streets only) if I have to ride between a pole and the bus bench, I can't tell. Or if I'm riding on the street, and there are parked cars, I don't want to get too much to the middle of the lane, but don't want to get too close to the parked cars either. Any ideas on how others compensate?