Sobriety checkpoints are not authorized in Michigan, which is odd considering that it was a Michigan legal case (Michigan Dept. of State Police v. Sitz) that prompted the U.S. Supreme Court to carve out an exception for checkpoints. However, Michigan later outlawed checkpoints (see 506 N.W.2d 209 (Mich. 1993)). Despite the fact that these checkpoints consistently reduce alcohol-related crashes, typically by 9%, Michigan has determined not to implement them.
Learn more about Michigan's DUI laws.