Skip to main content



DUI - Legislative Council Chart (showing ignition interlock changes)

Link to all datamaster discovery

DMT Software Update Memo - 7-13-20 

DataMaster DMT Operator Manual - Effective 7-13-20 

DMT Memo:  COVID DMT Cleaning & Use - 3-20-20

DataMaster DMT Operator Manual - Effective 8/26/15

DOH - DataMaster DMT Instrument Supervisor and Record Administrator Manual

DataMaster DMT Student Manuals

DUI Detection and Standardized Field Sobriety Testing Student Manual

Horizontal Gaze Nystagnus Test

A Primer by Kurt Hughes, Esq.

National Highway Traffic Safety - The Robustness of the HGN Test

Vermont Forensic Laboratory Chemists for DUI/DUID Cases - Memo 1/9/20


The Commonwealth v. Gerhardt, 81 NE.3d 751 (Mass. 2017) decision and briefing really provide fantastic leads for us in terms of identifying possible experts and getting quickly to the specific scientific studies on this.

Briefs are available here:

The decision, which is on Westlaw, can also be accessed here:  or in the ODG Trial Bank in Word format.

Depositions of State's DRE experts:  Expert 1 (Expert 1's CV and report),  Expert 2

DRE testimony in two cases - Drug CombinationMarijuana DUD. (note: new password required to access)

Defense expert report

Vermont Forensic Lab Drug Testing Memo 2-11-2019

Vermont Forensic Lab Evidentiary Blood Testing Memo 5-22-2019

Vermont Forensic Lab Blood Drug Testing Expansion & Accreditation Memo 6-14-2021


LAW ENFORCEMENT BULLETIN (10/22/15) (#15-08) - Notice to all law enforcement regarding criminal DLS charges pursuant to 23 VSA 674(a)


Academy Standards Board

National Traffic Law Center - "Between the Lines" (October 2021) - Forensic Science Standards Development

Vermont Forensic Lab Toxicology Update 6/14/21