Why is it important to use seatbelts even with LATCH systems?

Using seatbelts in conjunction with LATCH (Lower Anchors and Tethers for Children) systems is important primarily because lower anchors have weight limits. The LATCH system is designed to simplify the installation of child safety seats; however, the anchors have a specified weight limit that, if exceeded, may compromise the effectiveness of the restraint system during a crash. For instance, if a child and seat combined weight exceeds the designated limit for LATCH, using the vehicle’s seatbelt for added security is advisable to ensure the child safety seat remains properly anchored and offers optimal protection.

It's essential to recognize that while seatbelts can provide additional safety beyond what LATCH might offer, the main concern is not necessarily about comfort, ease of installation, or legal requirements; rather, it is ensuring that the child safety seat remains safely secured in the vehicle as intended, without exceeding the structural limits of the LATCH system.