SAE J1819 APR2026 is a Surface Vehicle Recommended Practice for securing child restraint systems in motor vehicles. Revised in April 2026 and superseding SAE J1819 MAR2015, this document updates the accommodation fixture and provides evaluation criteria for compatibility between child restraint systems, vehicle seats, and seat belts.
The practice addresses vehicle seat cushion shape and stiffness, lap belt length, buckle and latch plate dimensions, belt locking provisions, seat belt contact points, and child restraint system belt path location, length, features, and openings. It references applicable SAE and NHTSA publications, including FMVSS Standards 208, 209, 210, 213, 213a, 213b, and 225.
Application Scope: Intended for vehicle manufacturers, child restraint system manufacturers, automotive safety engineers, compliance professionals, and organizations evaluating child restraint compatibility with vehicle seats and seat belts.
