A type of guardrail end cap known as the X-Lite is responsible for at least seven deaths: four in Tennessee, two in Missouri, and one in Virginia. Instead of crumpling upon impact, as is supposed to happen, in some cases the cap and guardrail have not absorbed impact. Instead, they have speared the car, killing people inside.
Stephen Eimers became a national spokesperson for getting rid of the X-Lite guardrail systems after his daughter Hannah died in Tennessee, even going so far as to buy a Super Bowl ad in order to publicize the issue. In November, 2016, Hannah’s vehicle crossed a median and hit a guardrail on I-75, skewering the car and killing her instantly.
Eimers says that he has discovered roughly 25 deaths and a number of gruesome amputations that he claims were caused by the X-Lite guardrail system.