Highway Guardrail May Be Deadly, States Say

New York Times October 12, 2014

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Federal highway officials had long insisted that guardrails throughout the state were safe. But some guardrail heads had apparently malfunctioned, in essence turning the rails into spears when cars hit them and injuring people instead of cushioning the blow, Missouri officials said. […]
Because of its safety concerns, Missouri banned further installation of the rail heads on Sept. 24. It joined Nevada, which prohibited further purchases in January, and was followed six days later by Massachusetts. Lawsuits say the guardrails were to blame for five deaths, and many more injuries, in at least 14 accidents nationwide.

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