Convertible Crash Report: Dropping the Top Won’t Raise Your Risk
A study from the Insurance Institute for Highway Safety suggests that — despite appearances to the contrary — convertibles don’t create any additional safety risk for drivers in a crash. Shoppers may be concerned by the insubstantial appearance of a convertible roof, especially a fabric one, but IIHS’ analysis of crash and fatality rates indicates that both are actually lower for convertibles than other vehicles, although the difference in fatality rates was not statistically significant.
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Not Safer, Not Less Safe
Using data from National Highway Traffic Safety Administration databases on driver fatalities and crashes reported to police, the study found that convertibles are involved in 6% fewer crashes per mile driven, with an 11% lower driver fatality rate. Drivers of convertibles were, however, more likely to be ejected from a convertible in a fatal crash.
Fatal crashes for both types of vehicles didn’t differ significantly, with roughly 25% occurring in rollover crashes and around 50% involving just one vehicle. Approximately 60% of fatal crashes for either type of vehicle involved a frontal impact with about 20% involving a side impact.
More than a fifth of convertible drivers killed were ejected from the vehicle compared with 17% of nonconvertible drivers, and in rollover crashes that difference doubled to 43% for convertible drivers compared to 35% of nonconvertible drivers.
Different Driver Behavior?
The study couldn’t determine that driver behavior differed widely between convertible and nonconvertible drivers, but does note that convertible drivers were more likely to be wearing a seatbelt and less likely to be speeding when involved in a crash — but that they were also slightly more likely to be impaired by alcohol.
The data also didn’t provide enough context to determine whether additional factors such as weather, road or traffic conditions — even when comparing convertible and nonconvertible versions of the same car — might have influenced the results. Convertibles may be driven more often in better weather or on less-crowded roads, which may in turn reduce the likelihood of a crash.
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Should You Buy a Convertible?
If you want and can afford one — our Buying Guide can help you there — there’s no safety-centric reason not to, according to IIHS.
“Based on this study, convertibles don’t appear to pose a particular safety risk,” said Eric Teoh, IIHS director of statistical services and the paper’s author, in a statement. “If you’re shopping for a convertible, you should consider crash test ratings and safety features, just as you would if you were shopping for any other car.”
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