State v. Quaale

Fll E IN THE SUPREME COURT OF THE STATE OF WASHINGTON STATE OF WASHINGTON, ) ) No. 89666-6 Petitioner, ) ) v. ) EnBanc ) RYAN RICHARD QUAALE, ) ) Respondent. ) Filed DEC 18 2014 MADSEN, C.J.-The arresting trooper in this DUI (driving under the influence) trial testified that he had "no doubt" that the defendant was impaired based solely on a horizontal gaze nystagmus (HGN) test. We hold that the testimony was an improper opinion on guilt and affirm the Court of Appeals. FACTS Washington State Patrol Trooper Chris Stone saw a truck, driven by Ryan Quaale, speed by in a 25-mile per hour zone on…