An affidavit filed by Trinity expert witness Malcolm Ray hits back against recent comments that a test of the ET-Plus guardrail head demonstrated an impact that would have caused severe injury to a driver. The guardrail got a "pass" grade on the first four of eight government-requested tests and appeared to sail through the next three as well, but civil engineer and accident expert Brian Coon declared the eighth appeared to be a "clear failure" in an affidavit filed earlier this month.