I've lived on a "cul-de-sac" my whole life. Basically, there's a street that breaks off of a main road, probably constructed for the housing development. And off of this street, there are about five (in my case) "cul-de-sac"s. They're just little loops of road that shoot off like buds off of a branch. They basically allow for as many houses as possible to be built in an area with the fewest amounts of streets. A house on a cul-de-sac has a "court" address. I.E. 22 Ridgeford Ct.
What this means for the property is a very low amount of through traffic. It's pretty obvious it just spits you back out to the main road to the average driver's naked eye, and they'll only go through if they need to make a turn-around, so for families that want to be able to put a basketball hoop up or let their kids play in the yard—especially the middle of the cul-de-sac which is communal and great for playing baseball, kickball, soccer—any activity that needs a fair sized patch of grass.