bloomberg news / businessweek magazine

Selections from a yearlong investigation of allegedly deadly highway guardrails linked to nine deaths: 

Highway Guardrails Are Deadly Spears on Impact, Says Whistleblower

Highway Official Stood By Guardrail System Amid Doubts

Company Denied Its Guardrails Turned Into Spears. Meanwhile, Was It Making a Quiet Fix?

U.S. Alerts Public to Guardrails That Plaintiffs Say Turn Into Spears on Impact