Hmmm. Thinking about what you are saying I am reminded of certain rules of chivalry I was taught. The gentleman always walks on this inside of the sidewalk (closest to the street). Meaning if you are right handed, the lady will always be walking or armhooked to your left leaving your stronghand opened for protection. Always try to see to it that you are walking on the side of the street or side of the parking lot row where your right hand will be on this inside and she will be protected on the outside covered by your left side. On the other hand (pun intended
) if you are left handed then reverse what I just described.