Child Safety Crashworthiness Research
A committed research effort in understanding and improving child occupant protection in motor vehicles has been ongoing at NHTSA for many years. A renewed emphasis on child safety is underway as data show that motor vehicle crashes are the primary cause of death for children 4 and older. NHTSA has conducted research on the protection of children in side impact crashes and released a final rule in 2022 for testing CRSs in side impact test configuration (FMSS 213a). Much of that research has focused on the protection offered by child restraint systems (CRS). Additional research efforts are underway investigating the injuries resulting from rear interior components and surfaces to determine whether there is a need to increase the protection of rear-seat occupants.
Since children 12-years-old and younger represent more than half of the rear seat occupant population, NHTSA has also begun conducting research on protecting large children in the rear seat that use booster seats and seat belts. NHTSA is looking more closely at rear seat geometries, seat belt fit and other aspects related to the rear seat environment as applicable to older children.
FMVSS No. 213 - 3D Drawings
- June 30, 2022: Final rulemaking for FMVSS 213a released. The 3D drawings of the standard seat assembly for FMVSS No. 213a (Autodesk Inventor, Size 99.4 MB – zipped) December 2021 can be found here.
- December 5, 2023: Final rulemaking for FMVSS 213b released. The 3D drawings of the standard seat assembly for FMVSS No. 213b (Autodesk Inventor, Size 38 MB – zipped) March 2023 can be found here.
3D Drawings of the proposed LATCH Usability Tools.
- January 23, 2015: Notice of Proposed Rulemaking, NHTSA proposed three LATCH Usability Tools to evaluate the ease of use of the lower anchors of the LATCH system. Download the technical drawings of the proposed LATCH Usability Tools [Note: Opening Autodesk Inventor files with other software may result in loss of some data]
- Preliminary Drawings of an Upgraded Standard Frontal Seat Assembly (Autodesk Inventor, Size 24.5 MB - zipped) March 2015
NHTSA has been working towards upgrading the Federal Motor Vehicle Safety Standard No. 213, “Child restraint systems,” standard frontal seat assembly to better represent a vehicle’s rear seat. Download the preliminary technical drawings of the upgraded standard frontal seat assembly to evaluate child restraint systems in a frontal crash. Drawings are subject to change.
- Drawings of the Proposed Side Impact Sled (Autodesk Inventor 2014, Size 93.6MB) March 2014
Download the technical drawings of the standard seat assembly and the side impact sled proposed for inclusion into FMVSS No. 213, "Child restraint systems."
- Performance of Harnessed Child Restraints on Vehicle Seats With Modified Cushion Lengths and Variable Belt Geometry
- Feasibility of Center LATCH
- Evaluation of ISO CRS Envelopes Relative to U.S. Vehicles and Child Restraint Systems
- Characterizing Child Head Motions Relative to Vehicle Rear Seat Compartment in Motor Vehicle Crashes
- Characterizing Vehicle Rear Compartment Geometry for Child Restraint Applications
- Assessing the Restraint Performance of Vehicle Seats and Belt Geometry Optimized for Older Children
- Development of NHTSA's Side Impact Test Procedure for Child Restraint Systems Using a Deceleration Sled - Final Report Part 2
- Development of NHTSA's Side Impact Test Procedure for Child Restraint Systems Using a Deceleration Sled - Final Report Part 1
- Effect of Realistic Vehicle Seats, Cushion Length, and Lap Belt Geometry on Child ATD Kinematics
- Improving the Repeatability And Reproducibility of Belt Fit Measurement With 6YO and 10YO ATDs
- Evaluation of Hybrid III 6YO ATD Chest Jacket Shape and Position
- Booster Seat Study: Report to Congress
- Optimizing Protection for Rear Seat Occupants: Assessing Booster Performance With Realistic Belt Geometry Using the Hybrid III 6YO ATD