Why do slow walkers swerve and drift?

[modelamac]

Blankey Blank nailed most of it for me. I have a bad back that when not in position, really messes with my walking. My right knee has a mind of its own. Both hips are tolerable. My balance is such that I need a hand-rail to navigate stairs. You won't see me on the sidewalk without my walker. I just don't go where I have to walk any distance, simply because I can't. I'll let you have all of the sidewalk you need. Just be considerate of all those that can't move at your pace, and hope they try to stay out of your way in the right lane.