SUMMARY: This final rule establishes specific test procedures for installing child restraints to a child restraint anchorage system@ commonly referred to as a ????LATCH'' system@ in a front passenger seating position in vehicles certified to meet advanced air bag requirements through the use of a suppression system or a low risk deployment (LRD) system.1 The test procedures ensure that the child restraints are installed in a repeatable and reproducible manner. Because vehicle manufacturers need sufficient time to certify that their vehicles meet FMVSS No. 208 suppression or LRD requirements when tested with these procedures@ the compliance date of this final rule is September 1@ 2008. NHTSA will apply these test procedures to vehicles manufactured on or after September 1@ 2008 that have a LATCH system in a frontal seating position and that are certified to meet advanced air bag requirements through the use of a suppression or LRD system. 1 The LRD option involves deployment of the air bag in the presence of a Child Restraint Air Bag Interaction (CRABI) test dummy@ representing a 12- month-old child@ in a rear-facing child restraint.