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