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Factors affecting tether use and correct use in child restraint installations
Jessica S Jermakian1, Kathleen D Klinich2, Nichole R Orton2
1Insurance Institute for Highway Safety, 1005 North Glebe Road, Arlington, VA 22201, United States.
Journal of Safety Research
|December 3, 2014
Summary
Child restraint top tethers are often unused. This study found that tether anchor location and clear hardware design significantly increase proper use, improving child safety in vehicles.
Area of Science:
- Child Passenger Safety
- Vehicle Safety Engineering
- Human Factors in Transportation
Background:
- Top tethers for child restraints are frequently not used in forward-facing installations.
- Understanding factors influencing child restraint tether use is crucial for improving safety.
Purpose of the Study:
- To identify vehicle-specific characteristics of Lower Anchors and Tethers for Children (LATCH) systems associated with top tether use and correct installation.
- To inform vehicle design modifications for enhanced child restraint safety.
Main Methods:
- Parent volunteers installed child restraints using LATCH systems in various vehicles.
- Logistic regression analysis was employed to determine predictors of tether usage and correct attachment.
Main Results:
- Tether use was high (89%), but correct attachment occurred in 57% of installations.
- Tether anchors on the rear deck (sedan-style) were associated with higher usage compared to other locations.
- Confusing hardware negatively impacted correct tether attachment.
Conclusions:
- Vehicle design features, particularly anchor location and hardware clarity, significantly influence child restraint top tether use and correct installation.
- Modifying vehicle tether anchor accessibility can improve adherence to safety guidelines and enhance child occupant protection.
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