An Act providing that any person operating a motor vehicle on the public highways shall be deemed to have consented to a breath test (if unconscious a blood test) to determine intoxication, when arrested for any offense, provided the arresting officer has reasonable grounds to believe such operator was driving or in control of a vehicle with intoxicate; directing a six-month revocation of driving privileges for a person refusing such test after having been advised of his rights and consequences of refusal; providing hearing and appeal procedures; and reducing the blood alcohol percentage necessary to raise a presumption of intoxication.
Source for Popular Vote data: Washington Secretary of State. November 1968 General, Washington Secretary of State (http://www.sos.wa.gov/elections/results_report.aspx?e=43&c=&c2=&t=&t2=&p=&p2=&y=) (accessed 28 Aug 2011)