What is a combination that is NOT permissible when using car seat installation methods?

The combination of LATCH (Lower Anchors and Tethers for Children) and seat belt is not permissible because these two installation methods cannot be used together for the same car seat. LATCH is designed for ease of installation and to provide secure anchoring points within the vehicle, using either lower anchors or a tether in conjunction with a forward-facing seat. However, when a car seat is installed using LATCH, it must not also be secured with a seat belt at the same time. This rule exists to prevent excessive movement or instability that could occur from using both methods simultaneously.

In contrast, using a tether and seat belt is valid for forward-facing car seats, which helps to further stabilize the seat. Tethering a seat to lower anchors is also acceptable as it enhances the safety of the car seat installation. Additionally, lower anchors can be used with rear-facing seats effectively, following the manufacturer’s guidelines for weight limits and specific installation instructions.

Understanding these installation methods and their appropriate combinations is critical for ensuring child passenger safety in vehicles. Using them correctly allows for the maximum protection of children in the event of a crash.