DUI SOBRIETY CHECKPOINTS MUST BE CONSTITUTIONALLY PERMISSIBLE TO BE LEGAL
As far as DUI Checkpoints go, law enforcement agencies must establish that the DUI Checkpoint was set-up in such a way as to make it Constitutionally permissible. A DUI Checkpoint that is not Constitutionally permissible could lead to the entire stop, detention and arrest being suppressed and result in a dismissal of the DUI charges. Any agency that sets up a DUI Sobriety Checkpoint must prepare a "DUI Checkpoint Packet" pursuant to the case of Ingersoll v. Palmer. This "DUI Checkpoint Packet" is often referred to as an "Ingersoll Packet" based on the case.