Comparative performance of rearward and forward-facing child restraint systems with common use errors: Effect on crash injury risk for a 1-year-old occupant.
Traffic Inj Prev
; 23(2): 91-96, 2022.
Article
em En
| MEDLINE
| ID: mdl-35044289
ABSTRACT
OBJECTIVE:
To compare how errors in child restraint use influence crash injury risk in rearward and forward-facing restraints for a 1-year old occupant.METHODS:
Three convertible child restraint systems (CRS) were subjected to frontal dynamic sled tests at 56 km/h in rearward-facing and forward-facing modes in a correct use (baseline) condition and in five incorrect use conditions loose securing belt, loose harness, partial harness use, top tether slack, and three minor errors. Excursion, head, and chest 3 ms resultant acceleration, HIC15, and neck forces and moments of a Q1 anthropomorphic test device (ATD) seated in the restraints were measured. The effect of incorrect use on each outcome and restraint type was analyzed.RESULTS:
The influence of errors varied across different outcome variables, the three restraints tested and orientation modes. Excursion increased in four of five incorrect use conditions in both rearward and forward-facing orientations. A very loose harness increased four of five outcome variables in at least one forward-facing restraint, whereas only excursion was increased when rearward-facing. Overall, there tended to be a more negative effect of incorrect use (demonstrated through increases in outcome variables compared to the baseline) in the forward-facing orientation.CONCLUSIONS:
Overall, errors in use tended to have a larger negative impact on forward-facing restraints than rearward-facing restraints. Given the widespread nature of errors in use, this adds further weight to arguments to keep children rearward-facing to 12 months of age and older. The results also highlight a variation in response to errors across differently designed restraints, suggesting the influence of errors may be minimized by restraint design that is more resistant to errors.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Sistemas de Proteção para Crianças
/
Traumatismos Craniocerebrais
Tipo de estudo:
Etiology_studies
/
Risk_factors_studies
Limite:
Child
/
Humans
/
Infant
Idioma:
En
Revista:
Traffic Inj Prev
Assunto da revista:
TRAUMATOLOGIA
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
Austrália