DRE Reconstruction-A Case Study

Only available as part of a package

This presentation addresses cases in which a collision occurs and a DRE evaluation or breath test cannot be performed. Toxicology samples may be collected at the hospital, but analysis may indicate the presence of drugs and alcohol while showing an alcohol concentration below the legal limit. In addition, drugs detected may have no limit, or the concentration may be below a legal cutoff. However, the totality of the evidence may still indicate that the driver was impaired. In such cases, a DRE reconstruction can link toxicology results to observed impairment to support an "impaired by drugs and alcohol" charge. This session will explain when to conduct a DRE reconstruction, how to conduct one, and the benefits for law enforcement.

  • Understand in what circumstances they should consider using a DRE reconstruction. They will learn how to properly complete a DRE reconstruction.
  • Describe if not a DRE what information is crucial to collect and how important note taking and report writing is to allow for a DRE to complete a successful DRE reconstruction.
  • List benefits of completing a DRE reconstruction. And learn what charges and what type of file a DRE reconstruction can support.
Amarino Oliveira

Amarino Oliveira

Corporal

Royal Canadian Mounted Police

Cpl. Amarino Oliveira has been a police officer with the Royal Canadian Mounted Police since February of 2008. He has been a certified DRE since 22nd of February 2013 and has been a certified DRE instructor since March of 2014. He served as the provincial DRE coordinator for New Brunswick from March of 2014 until November of 2025. During his career he specialized himself in impaired driving investigations, becoming an instructor for the Approved Drug Screening Equipment (ADSE) (Drager Drug Test 5000 and Abbott So Toxa), he`s also an instructor for the Approved Screenind Devices (Alco-Senso FST), and for the Approved Instrument (Intox EC/IR II). He was also a Qualified Technician on the BAC DataMasterC and operator for the alcotest 7410 GLC. He has been involved in over 1000 impaired driving investigations. He is currently working in the DRE national coordinating office in Canada.

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