Earlier quoted context omitted.
> An “intersection” is the area embraced within the prolongation of the lateral curb lines, or, if none, then the lateral boundary lines of the roadways, of two highways which join one another at approximately right angles or the area within which vehicles traveling upon different highways joining at any other angle may come in conflict. https://leginfo.legislature.ca.gov/faces/codes_displaySectio...
My question was specifically about the "adjacent" part of "adjacent intersections". That link explains "intersections". What does it mean when those are "adjacent"?
My lay interpretation is, I think, the same as yours: In order to avoid doing illegal things, one would have to walk a mile to cross the road in your example.
And as a lay jaywalker: I'm absolutely certain that I would never do that; I'd simply cross the road when when it was safe to do so. (I'd also like to hope that I would have the time, money, and opportunity to have a turn in front of a judge for any resulting citation because this kind of result is absolute horseshit.)