Judge orders mediation to resolve $175M verdict DALLAS — A federal judge has ordered mediation between a Texas company and a whistleblower who won a $175 million verdict over a design change in the company’s highway guardrails. Critics said the change made it more likely that cars could be impaled if they hit either end of the guardrails head-on. On Tuesday, U.S. District Judge Rodney Gilstrap ordered Trinity Industries Inc. and the whistleblower to attend mediation with Duke University law professor …