Charles A. Perlos and four other individuals were charged with driving under the influence of intoxicating liquor. Charges were brought after the prosecutor, under authority of Michigan's Vehicle Code, obtained blood alcohol test results from hospitals that had treated each defendant for post-automobile collision injuries. All defendants were conscious while blood was being removed and had not been placed under arrest or advised of their rights regarding the chemical test. The court found that Michigan's Vehicle Code had fundamental flaws in due process rights, seizure of defendants' blood tests under the Code was unconstitutional, and the statute created an unjustified classification among drivers contrary to the constitutional provision guaranteeing equal protection.