Amends TCA Title 39 and Title 55.

Tennessee SB1400 amends laws related to DUI offenses, specifically increasing the duration of driver's license revocation for certain violations, including implied consent law refusals, from one year to one year and six months for first-time offenders. The bill also allows law enforcement officers to assist qualified practitioners in obtaining blood samples and introduces provisions for administering oral fluid tests under specified circumstances. Key changes include the admissibility of oral fluid test results in court and extended revocation periods for repeat offenders of vehicular assault and homicide.