Undoubtedly, that is true in most states, but is it true in Colorado (or Washington)? I'm not sure what the law is regarding driving under the influence of marijuana in states where it's legal.
If you are talking about being impared, then that's a different question. There have been studies that show that driving ability is impaired even below legal limits. The question is one of degree. Do we really want to treat someone who's had one drink and is slightly impaired similarly to someone who's got a 0.15% BAC and is severely impaired? Probably not.
Similarly, I am sure that smoking one joint would cause impairement, but how much? Even if smoking one joint causes enough impairment to legitimately charge such a person with DUI, why should someone who uses marijuana be legally disallowed from driving? Do you really think that marijuana users are CONSTANTLY high? Why should someone not be allowed to drive to work in the morning, home in the afternoon, and then smoke a joint without doing any more driving (assuming that you're talking about a state like CO where that's legal)?
reality states you are impaired.
Pot does make users less able to function in society, financial independence (hold a job), and it ages the body faster.
IOW makes good government dependent democrats...duuuude.
just of added nail on the pot users coffin:
“According to the National Institute on Drug Abuse, marijuana is the number-one illicit drug of choice in America. The psychoactive chemical in marijuana, or cannabis, is delta-9-tetrahydrocannabinol (THC), which binds to numerous cannabinoid receptors in the brain and throughout the body when smoked or ingested, producing a distinctive high. Cannabinoid receptors in the brain influence a range of mental states and actions, including pleasure, concentration, perception of time and memory, sensory perception, and coordination of movement. There are also cannabinoid receptors throughout the body involved in a wide range of functions of the digestive, cardiovascular, respiratory and other systems of the body. Currently two subtypes of cannabinoid receptors are known, CB1 and CB2, the former being involved mostly in functions of the central nervous system and the latter more in functions of the immune system and in stem cells of the circulatory system.”
This does not even address the fact that pot impairs glucose metabolism. (just search on the net) No sugar no brain function. (iow democrat zombies)