[Retric]

The 2 point LATCH system is attached below not behind the car seat’s center of gravity, so under heavy acceleration it depresses the car’s seat cushion and rotates forward then bounces up and back. Minimizing this is the reasoning behind the 3rd attachment point.

[dresstotheleft]

In forward facing child seats there are the two latch buckles as well as a tether anchor that runs over the top of the seat.