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Factors Affecting Tether Use and Misuse.
| 题名： | Factors Affecting Tether Use and Misuse. |
| 作者： | Flannagan, C. A.; Klinich, K. D.; Malik, L. A.; Manary, M. A.; Narayanaswamy, P.; Orton, N. R. |
| 关键词： | Anchors(fasteners); Child Restraint Systems; Children; Human Factors Engineering; Installation; Lower Anchors And Tethers For Children(latch); Misuse; Safety Belts; Testing; Tethers; Usability; Vehicl |
| 摘要： | This project investigated factors relating to tether use and misuse. Volunteer testing was performed with 37 subjects on 16 different vehicles using 2 forward-facing child restraints (Britax Marathon 70 or the Evenflo Triumph), with each subject performing 8 child restraint installations on a set of four vehicles. Vehicles were selected to provide a variety of general tether locations (filler panel, upper seatback, lower seatback, floor, or roof), as well as a variety of recommended tether routings with respect to the head restraint: under, over, around. Simple instruction regarding the LATCH system was provided after the fourth trial. Subjects used the tether in 89% of the 294 forward-facing trials and attached the tether correctly in 57% of installations. Subjects were more likely to use the tether if they were less than age 40, had previous tether experience, if the tether was located on a filler panel, and if the vehicle did not have any potentially confusing hardware. In addition, tether use was 83% in the first four trials and increased to 95% in the last four trials after instruction was provided. Subjects had the greatest difficulty in the pickup truck, which use loops of webbing as a router for the installed position and the tether anchor for the adjacent position; the tether was attached correctly in only 11 percent of installations. Tethers were more likely to be used when the tether anchor was located on the filler panel of sedans, which had a use rate of 95 percent, compared to when the anchor was located on the floor, roof, or seatback, which had use rates ranging from 79 to 89 percent. Tethers were less likely to be attached correctly when there was potentially confusing hardware present, 47 percent, compared to 70 percent. |
| 报告类型： | 科技报告 |
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