I didn't know that. wonder if a blood test can tell if ~I~ am high?

like, for instance, when first taking some anti-depressants or sleep aids, they can have side effects that could alter your driving ability, but after awhile, the side effects dissipate and driving is fine. what about someone who's been smoking daily for ~30 years? (or much less!)

I'm sure a person like that would have plenty in their blood... but 15 minutes after smoking a j, rest assured, the buzz is gone.
copobo Reviewed by copobo on . semi driver in fatal, 'on' marijuana so does this mean his piss test was positive, or that he was ripped at the time of the accident? 'had been smoking marijuana' - when? while he was driving? a half hour ago? yesterday? 2 weeks ago?? -- Semi driver smoking pot during Commerce City double fatal - The Denver Post A semi-tractor trailer driver had been smoking marijuana when he crossed into oncoming lanes and caused a fiery crash with a dump truck that killed himself and the other driver earlier this year. Daniel Rating: 5