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On Demand

2022 Prosecuting the Drug-Impaired Driver Conference - Effective Use of Dre’s and Studies

Total Credits: 1.0 including 0.0 Ethics CLE, 1.0 CLE

Average Rating:
Impaired Driving
Beth Barnes |  Justin Maunder |  Thomas Humphrey
1 Hour 08 Minutes
Audio and Video
Never expires.


Effective Use of Dre Instructors And The Studies



Beth Barnes's Profile

Beth Barnes Related Seminars and Products

TSRP, Assistant Phoenix City Prosecutor

Phoenix City Prosecutors' Office

Beth Barnes serves as Arizona’s GOHS Traffic Safety Resource Prosecutor (TSRP) through a grant from the Arizona Governor’s Office of Highway Safety and the Arizona DUI Abatement Council.  In this role, she serves as a resource for law enforcement, prosecutors, traffic safety professionals, judges, and the community to more effectively address impaired driving and other traffic safety issues.  She has been an assistant city prosecutor with the City of Phoenix Prosecutor’s Office for almost 29 years, specializing in the prosecution of DUI cases. Beth also serves as the national prosecutor representative on the IACP Technical Advisory Panel for Impaired Driving Programs.

Justin Maunder's Profile

Justin Maunder Related Seminars and Products

AZ DPS Impaired Driving Programs Coordinator

Arizona Department of Public Safety

Justin Maunder is a State Trooper for the Arizona Department Public Safety (DPS) and is currently the department's Impaired Driving Programs Coordinator. Justin has been a Peace Officer in Arizona for eight years and has spent the last three years with DPS following employment with Globe Police Department and Navajo County Sheriff's Office. Justin is an Horizontal Gaze Nystagmus/Standarized Field Sobriety Test (HGN/SFST) Technition, HGN/SFST Instructor, Advance Roadside Impaired Drivine Enforcement (ARIDE) Trained, Drug Recgnition Expert (DRE), Drug Recognition Expert Instructor, and a Drug Impairment Training for Educational Professionals (DITEP) Instructor. Justin is the course manager for the Advanced Collision Investigation Course for the DPS State Trooper Academy and a forensic phlebotomist.

Thomas Humphrey's Profile

Thomas Humphrey Related Seminars and Products


Arizona Department of Public Safety

Thomas Humphrey has been employed with the Arizona Department of Public Safety (AZ DPS) in the Highway Patrol Division for 12 years. Trooper Humphrey has been stationed in the Winslow, Valle (Williams/Grand Canyon Squad), and Flagstaff areas. In October 2016 he transferred to his current duty assignment with the Northern Patrol Bureau Regional Advanced Collision Team (ReACT). His squad services the entire northern half of Arizona and responds to criminal collisions involving serious physical injury or death resulting in vehicular homicide or aggravated assault cases. In December 2019, he became the Northern Region Impaired Driver Coordinator for the Governor’s Office of Highway Safety. Trooper Humphrey has extensive training in advanced collision investigations and impaired driver investigations. He is a current Drug Recognition Expert (DRE) Instructor, Advanced Roadside Impaired Driver Enforcement (ARIDE) Instructor, a Horizontal Gaze Nystagmus and Standardized Field Sobriety Test (HGN/SFST) Instructor, Drug Impairment Training for Education Professionals (DITEP), Forensic Phlebotomist, RADAR/LIDAR Instructor, eWarrant Training Instructor, and a Field Training Instructor. Throughout his career, Trooper Humphrey has received numerous awards and letters of commendation for his dedication and work ethic. He has provided numerous trainings to various law enforcement agencies across Northern Arizona, regarding impaired driver enforcement and collision investigation. His goal is for optimal highway safety through the detection, apprehension, and successful prosecution of the impaired driver.