R v. MacIsaac

R v. MacIsaac

The court found the AV alert admissible and reliable electronic evidence linking the alert time (3:57 a.m.) to the vehicle crash and therefore to the time operation ceased; the accused was the driver; the first breath sample at 5:21 a.m. (120 mg/100 ml) fell within the two‑hour offence window and proved the s.320.14(b) exceeding offence beyond a reasonable doubt; the s.320.14(a) impaired charge arose from the same facts and was conditionally stayed to avoid double punishment. The court further held that where s.320.31(4) is relied upon the Crown must prove the time of last driving within a reasonably narrow interval (suggested benchmark: a 30‑minute interval) and use the later end of that...

Citation
2026 NSPC 13
Parties
Crown: His Majesty the King; Accused: Brandon MacIsaac
Court
Nova Scotia Provincial Court
Jurisdiction
Canada
Judgment Date
20 January 2026
Procedural Posture
Criminal Impaired Driving/exceeding (s.320.14) / Trial Judgment
Outcome
Guilty on s.320.14(b) (exceeding); conditional stay entered on s.320.14(a) (impaired driving)
Legal Topics
Impaired Driving, Over 80 Mg Offence (exceeding), Electronic Evidence (automated Vehicle Alerts), Section 320.31(4) Extrapolation/presumption, Third‑party Suspect Defence, Time of Last Driving, Admissibility of Computer Data
Source Language
English
Criminal Law Evidence Forensic Evidence Road Traffic Offences Impaired Driving Over 80 Mg Offence (exceeding) Electronic Evidence (automated Vehicle Alerts) Section 320.31(4) Extrapolation/presumption +3 more

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Parties

His Majesty the King

Crown

Brandon MacIsaac

Accused

Procedural Posture

Criminal Impaired Driving/exceeding (s.320.14) / Trial Judgment

Legal Issues

  1. 1 Identity of driver (third‑party suspect defence)
  2. 2 What must be proven about time operation ceased for s.320.31(4) extrapolation
  3. 3 Admissibility and reliability of an automated vehicle (AV) alert as electronic evidence

Ratio Decidendi

The court found the AV alert admissible and reliable electronic evidence linking the alert time (3:57 a.m.) to the vehicle crash and therefore to the time operation ceased; the accused was the driver; the first breath sample at 5:21 a.m. (120 mg/100 ml) fell within the two‑hour offence window and proved the s.320.14(b) exceeding offence beyond a reasonable doubt; the s.320.14(a) impaired charge arose from the same facts and was conditionally stayed to avoid double punishment. The court further held that where s.320.31(4) is relied upon the Crown must prove the time of last driving within a reasonably narrow interval (suggested benchmark: a 30‑minute interval) and use the later end of that...

Court Disposition

Guilty on s.320.14(b) (exceeding); conditional stay entered on s.320.14(a) (impaired driving)

Orders

  • Convicted of exceeding offence under s.320.14(b)
  • Conditional stay of proceedings entered on impaired driving charge under s.320.14(a) (same transaction)