All of the squares measure approximately from east to west, but they vary north to south from approximately 100 to . Typically, each square is intersected north-south and east-west by wide, two-way streets. They are bounded to the west and east by the south- and north-bound lanes of the intersecting north-south street, and to the north and south by smaller one-way streets running east-to-west and west-to-east, respectively. As a result, traffic flows one way—counterclockwise—around the squares, which thus function much like traffic circles.