While we do give a lot of room to vehicles- outside of maybe very small or old towns- at least in America- most sidewalks are much larger than that, a standard cross walk is 4-8x that width, and this doesn’t account for spaces which are purposed for use by vehicles and people to share.
I think the purpose of the crosswalk being drawn that way is to indicate vulnerability, rather than actual width.
The title of the post indicated space sharing, but the art encompasses more than that.
I mean, we could swap to give vehicles the side walk, but given a “small” “subcompact” car tends to be at least 13” long, 6” wide, and given they require a space in which to maneuver since they change heading via slip angle between front and rear tires, cars needing more space than humans to function is somewhat self evident by design. If you put a human in a box the consistent width of their widest point, they could easily complete a 360 degree direction change, most any car could not. What if we showed the spaces taken by buildings or airplanes. Why- those are even bigger than cars, and airplanes travel lanes are multiple tiles the size of a freeway- for a single craft. Or boats. A container ship alone displaced the volume of some small towns. As for vulnerability- it is again self evident. I think the concept of being unguarded against thousands of pounds of metal with more force behind it than a bullet already does a better job of imparting vulnerability than a wood plank.
The title of the post indicated space sharing, but the art encompasses more than that.