The appellant, De Shen, appealed his conviction for impaired driving.
The trial judge had found him guilty of impaired driving but not guilty of driving with a blood alcohol concentration over 80 mg.
On appeal, the appellant argued that his Charter rights under sections 10(a) and 10(b) were infringed, and that the trial judge erred in assessing the evidence of impairment by dismissing the possibility of illness as speculative.
The court found that the police lawfully detained the appellant under the Highway Traffic Act, suspending his s. 10(b) rights at the roadside.
It also found that the appellant failed to establish a proper evidential basis for his claim that his s. 10(b) rights were infringed at the police station regarding counsel of choice.
While the trial judge erred in law by dismissing the illness defence as speculative due to lack of evidence, the appellate court applied the curative proviso, concluding that there was no reasonable possibility the verdict would have been different given the overwhelming evidence of impairment by alcohol.
The appeal was dismissed.