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Development and testing of a more realistic pelvis for the hybrid III 6-year-old ATD
Objective: Design and test a new pelvis for the Hybrid III 6-year-old (6YO) anthropometric test device (ATD) with a more humanlike bone structure, flesh contour, and flesh stiffness intended to provide more realistic interaction with belt restraints. Methods: Target geometry for the new pelvis bone...
Effects of vehicle features on CRS installation errors
This report documents a study of how vehicle features contribute to CRS installation errors. Thirty-two subjects were recruited based on their education level (low or high) and experience with installing CRS (none or experienced). Each subject was asked to perform four child restraint installations...
Labels, instructions and features of convertible Child Restraint Systems (CRS) evaluating their effects on CRS installation errors.
This report documents a study of how CRS features, labels, and instructions contribute to CRS installation errors. Task 1A focused on assessing different physical features of 16 convertible CRS, while Task 1B evaluated baseline and modified versions of labels and instructions for two CRS models....
Evaluation of Hybrid-III 6YO ATD chest jacket shape and position
In previous work, belt fit on the Hybrid-III six-year-old (6YO) anthropomorphic test device (ATD) was found to depend on the positioning of the chest jacket of the ATD. Moreover, differences were noted between jackets manufactured by Denton-ATD and First Technology Safety Systems (FTSS). The...
Driver report of improper seat belt position among 4- to 9-year-old children
OBJECTIVE: To determine the frequency with which drivers report improper seat belt positions among children 4-9 years of age and the frequency with which reported problems were attributable to the lap belt, shoulder belt, or both. SUBJECTS AND METHODS: Analysis of driver responses to 5 questions...
Measurement of the contour and deflection of vehicle seats for comparison with the FMVSS 213 dynamic test bench
Federal Motor Vehicle Safety Standard (FMVSS) 213 specifies a bench seat that is used in dynamic testing of child restraint systems. To assess the representativeness of the FMVSS 213 bench, data from 54 passenger cars, minivans, and SUVs were analyzed to quantify the side-view profile of the seat...
Improving the repeatability and reproducibility of belt fit measurement with 6YO and 10YO ATDs
In previous work, researchers at the University of Michigan Transportation Research Institute (UMTRI) developed a method for quantifying the belt fit provided by belt-positioning boosters by measuring the belt location relative to the six- and ten-year-old Hybrid-III dummies. In another study, the...
Design and testing of a child restraint for developing countries using low-technology manufacturing methods
As passenger car use becomes more common in developing countries, the number of child passengers killed and injuries also increases. Rates of child restraint use appear to be much lower in developing countries than in the U.S. or Europe. One barrier to increased restraint use is the relatively high...

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