State v. Thill

WUEST, Justice.

On October 21, 1989, at approximately 1:00 a.m., the Sioux Falls Police Department set up a sobriety roadblock for southbound traffic on Minnesota Avenue in Sioux Falls, South Dakota. At the point of the roadblock, a patrol car was stationed with its red lights flashing. Another patrol car with its amber lights flashing was parked approximately 350 feet north of the roadblock. Traffic cones were set in the street to direct the southbound traffic through the roadblock.

Officer Persing (Persing) was on duty and assigned to check cars at the roadblock when he observed Gregory…