http://www.austlii.edu.au/au/cases/cth/HCA/2012/24.html

Interesting case. This guy ran straight across a Give Way sign, ended up killing both his passengers. He was convicted under S 318 of the Crimes Act (Vic) and sentenced to 7 years in prison for culpable driving resulting in death.


Quote:

There was no evidence that Mr King had consumed alcohol or that he had been driving irresponsibly prior to the collision. There was, however, evidence of tetrahydrocannabinol in his blood at a level of 13ng/mL, which was characterised by expert witnesses as a "high reading" and which, according to their evidence, would have "significantly impaired" his driving skills at the relevant time.......

muso wrote on Jul 13^th, 2012 at 2:00pm:

http://www.austlii.edu.au/au/cases/cth/HCA/2012/24.html Interesting case. This guy ran straight across a Give Way sign, ended up killing both his passengers. He was convicted under S 318 of the Crimes Act (Vic) and sentenced to 7 years in prison for culpable driving resulting in death. Quote: There was no evidence that Mr King had consumed alcohol or that he had been driving irresponsibly prior to the collision. There was, however, evidence of tetrahydrocannabinol in his blood at a level of 13ng/mL, which was characterised by expert witnesses as a "high reading" and which, according to their evidence, would have "significantly impaired" his driving skills at the relevant time.......

How wasted does 13ng/ml work out as? 
Is there any way to tell if he was actually under the influence, or just had residual THC in his blood from previous use?

... wrote on Jul 13^th, 2012 at 6:23pm:

muso wrote on Jul 13th, 2012 at 2:00pm: http://www.austlii.edu.au/au/cases/cth/HCA/2012/24.html Interesting case. This guy ran straight across a Give Way sign, ended up killing both his passengers. He was convicted under S 318 of the Crimes Act (Vic) and sentenced to 7 years in prison for culpable driving resulting in death. Quote: There was no evidence that Mr King had consumed alcohol or that he had been driving irresponsibly prior to the collision. There was, however, evidence of tetrahydrocannabinol in his blood at a level of 13ng/mL, which was characterised by expert witnesses as a "high reading" and which, according to their evidence, would have "significantly impaired" his driving skills at the relevant time....... How wasted does 13ng/ml work out as?  Is there any way to tell if he was actually under the influence, or just had residual THC in his blood from previous use?

In my experience, 13ng is pretty high. The detection limit by the best saliva test is around 4ng, and that's evidence of impairment, and recent use (in the last 2 hours). In some US states, they set a limit of 5ng for driving.

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