If you haven't been on a recently produced (2022 or later) Sprint Map, familiarize yourself with ISSprOM 2019-2 "style" maps ... a good starting point is this article, look at the first map. TL;DR: (at least look at the map there though!)
Areas with alternating diagonal white and colored stripes are passable at two levels -- for example, beige and white means pavement on top, tunnel underneath. Gray and white means that inside a building there are _at least_ two levels you can roam around in that area.
Non-multilevel canopy -- where you can cross through buildings -- is colored light grey, as opposed to the dark grey of an impassable building interior. (visible in map fragment on the Mesa notes page)
Thick Black Lines are uncrossable fences or walls. These are obstacles to go around. It may be possible to cross some, but it's dangerous, illegal, unfair, etc. (visible in map fragment above on the Mesa notes page)
Olive Green Areas are mapped to identify flowerbeds and gardens you shouldn't run through as well as out of bounds or forbidden areas. (visible in map fragment above on the Mesa notes page)
