Cul-De-Sac

I grew up living in a cul-de-sac. 18 years in that environment and I can't remember ever seeing someone park their car in the middle of the street. I currently live at the end of a cul-de-sac which is nice because it's quieter because the traffic that passes by is limited. However, there's apparently an invisible box in the middle of the rounder part of the street and people constantly park in the middle of this box in the middle of the street. I see it all over Anchorage, a town that is pretty terrible at parking, so it could be "cultural" but it's become a new pet peeve to me.