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The frontal-impact response of a booster-seated child-size PMHS

F.J. López-Valdés, J.L. Forman, O. Bostrom, R. W. Kent

Traffic Injury Prevention Vol. 11, nº. 3, pp. 320 - 327



This article presents the response of a child-size postmortem human subject using a booster seat in a series of three frontal impact sled tests.


A 54-year-old female cadaver was seated in a booster seat in the rear seat of a buck representing a mid-sized American sedan. Two different restraint systems (conventional belt and pretensioning, force-limiting belt) were used to run three simulated frontal impacts (one at 29 km/h, two at 48 km/h). Instrumentation included accelerometers rigidly mounted on relevant body landmarks as well as chest bands. Trajectories were assessed through high-speed video cameras.


Specific focus was on the whole-body kinematics and resulting head trajectories under two different restraint conditions (booster seat and standard belt, booster seat and force-limiting pretensioning belt) in a rear seat environment. At 48 km/h, the pretensioning, force-limiting seat belt reduced the forward excursion of both the head (353 mm vs. 424 mm) and the h-point (120 mm vs. 152 mm) compared to the standard system. Maximum torso pitch was similar for both seat belts.


A complete description of the outcome of the tests is presented in the article. These results suggest that the introduction of a pretensioning force limiting belt in the rear seat can be beneficial for small size occupants like children using booster seats.

Palabras Clave: Frontal impact, Child restraint systems, Kinematics, Restraint systems

Índice de impacto JCR y cuartil WoS: 1,401 (2010); 2,000 - Q3 (2022)

Referencia DOI: DOI icon

Publicado en papel: Junio 2010.

Publicado on-line: Junio 2010.

F.J. López-Valdés, J.L. Forman, O. Bostrom, R. W. Kent, The frontal-impact response of a booster-seated child-size PMHS. Traffic Injury Prevention. Vol. 11, nº. 3, pp. 320 - 327, Junio 2010. [Online: Junio 2010]

    Líneas de investigación:
  • *Sistemas Mecánicos: Mecánica Estructural, Elementos de Máquinas, Prototipado Rápido, Metrología Dimensional

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