Pubdate: Tue, 24 Jan 2012 Source: Denver Post (CO) Copyright: 2012 The Denver Post Corp Contact: http://www.denverpost.com/ Details: http://www.mapinc.org/media/122 Referenced: http://www.mapinc.org/drugnews/v12/n051/a01.html HOW MUCH MARIJUANA IS TOO MUCH FOR SAFE DRIVING? Re: "Sensible limit for smoking, driving," Jan. 18 editorial. I strongly disagree with your recommendation on what limits should be set for drivers who smoke marijuana. Your editorial seems comfortable in accepting the 5 nanogram limit of THC (the "psychoactive substance in marijuana") in a driver's system. But the editorial goes on to say that a state toxicologist reported "the best research shows impairment is detected at the 2 nanogram level." So why go along with the higher 5 nanogram limit? And isn't marijuana supposed to be generally illegal? We already have enough death and destruction on our roads and highways. I wholeheartedly agree with state Sen. Steve King, who is "leaning toward proposing a zero-tolerance bill." If any amount of THC is detected, the driver is busted. Kelly Henry, Arvada - --- MAP posted-by: Jay Bergstrom