In December 2014, the Washington State Supreme Court held that the HGN field sobriety test, which can indicate physical signs of alcohol consumption, cannot by itself establish impairment. On August 28, 2011, Washington State Patrol Trooper Stone observed Ryan Quaale driving his truck 56 mph in a 25mph zone on…
Horizontal Nystagmus is one of three common field sobriety tests currently administered by law enforcement officers across Washington State. Nystagmus is an involuntary rapid movement of the eyeball, which may he horizontal, vertical, or rotatory. An inability of the eyes to maintain visual fixation as they are turned from side…
In State v. Baity, the Washington Supreme Court found the basis for HGN testing, that intoxicated people will exhibit nystagmus, to be generally accepted under Frye. Baity also addressed the admissibility of the 12-step DRE examination, of which HGN was one step, employed by police officers to detect behavior associated…