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LEAD Impairment Training

LEAD Impairment Training consists of over 40 drug impairment experts and trainers across the state of Colorado. We are a trusted consultant and training services provider for over 30,000 people in State, Federal, Department of Defense and safety focused Corporations. 


Since 2007, our expertise and production of quality instruction has been depended on solely by the Colorado Department of Transportation (CDOT) for Drug & Alcohol Impairment recognition training.  Our  knowledge base training has inspired the trust by the Colorado District Attorneys Council who actively consults with us regarding key considerations impacted by state laws and regulations. The reputation and integrity of LEAD Impairment Training services was reflective in our selection to assist in the first live marijuana impairment recognition class in Colorado.

Meet the Leadership Team
Mark Ashby
CEO, President

Mark Ashby started LEAD Impairment training in 2007 and continues to oversee all operations and trainer development. He is also the senior Colorado DRE Course Manager and is certified as an instructor in all NHTSA Impaired Driving Classes.  Mark is a 23 year veteran Police Officer for the City of Thornton. 


Mark has trained over 30,000 people in Colorado on the danger of Impaired Driving and drugs. He has worked with the Drug Enforcement Agency, National Guard, US Army, US Air Force, US Navy, Medical Staffs, Educational Facilities, Law Enforcement Agencies, Municipal Governments, Mothers Against Drunk Drivers and many more groups. He has provided detailed training for several corporations to include those in the: Medical, Construction, Employment and Beverage industries.

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Dave Silberman
SVP & Chief Instructor

Dave Silberman, Ph.D., has contributed to civilian and military law enforcement for the past 23 years in certified police capacity roles in Colorado, Texas, and the United States Department of Defense. In these capacities, Dave has consulted, developed, and instructed advanced police training programs in leadership, instructor development, curriculum development, and NHTSA drug detection and traffic safety programs since 2003.

Dave has certified over 5,000 people in advanced methodologies pertaining to instructor development, impaired driving, and speed measurement enforcement programs. Finally, Dave is a decorated disabled United States combat veteran and recipient of medals for actions in combat and services of commendation for the U.S. Air Force and U.S. Army and holds a Ph.D. in Human Resources Development. His research focuses on helping organizations strategically navigate human potentiality and the negotiation of workplace and identity-based tension. He is a bestselling author, has authored scholarly literature, and has published practitioner-based articles in places like Forbes. Dave also serves as a graduate-level adjunct professor at Boston University.

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