Marijuana and Driving: A Review of the Scientific Evidence
I know you'll hate the source, but check the sources sources.
Seems there is quite a bit of research by real scientists that has all come to the same conclusion.
And it is pretty much the opposite of the impression the OP piece was designed to leave.
Its not the first time either. More than once the Drug Warriors have ordered studies about the dangers of pot and when the results came back with an answer they didn't like they simply chucked it and ordered another they did like.
An honest broker confronted with two studies of the same subject with opposite results would commission at least a third to determine which is correct. That's not what happened.
The drug war is politically and economically entrenched. Powerful interests stand to lose lots of power and money if it ends. Pot is the "poster child". If they lose that, the "gravy" goes away. Pharmacy companies take big losses. (Pot reduces the physical effects of stress. Red eyes is a side effect of relaxation of the smooth walled muscles. How much profit do pharmacy companies stand to lose on drugs treating stress and its resultant conditions when effective medicine can be grown in your backyard for free?).
Even the govts. Anti drug site finally admits pot is medicine, while still trying to maintain that it is so dangerous that it must remain in the hands of big pharmacy and only be obtainable at great expense.
There hasn't been any nobility in the drug war for a long time. Only the longest of ostrich necks could possibly still believe it is a noble effort honorably executed.