Judge Theresa M. Brennan

A preliminary breath test (PBT) is a small handheld breath testing device used by police officers to determine whether or not to arrest a person for DUI. Typically, administration of the PBT follows field sobriety tests. Based upon a motorist’s performance of field sobriety tests and the results of the PBT, a police officer makes a determination to arrest or release the driver. PBTs are also used to convict minors of “possessing” alcohol.