From a US pov, I go to the right. Why? Not necessarily because that's how drivers are etablished for road travel but because of where I'll be located on a sidewalk in relation to these drivers. If I'm on the right sode of the road, the drivers approach from behind. I stay to the right to stay further away from what I don't see coming. If on the left, I stay to the right because I can see what's coming but other's walking in the same direction of traffic can't see what approaches them from behind. I get really lost at going into building that have their entrance doors on the left/exits on the right.