DENVER (AP) -- A marijuana blood limit for drivers has failed in Colorado, the fourth time lawmakers have failed to agree to a pot analogy to blood-alcohol limits.
This year's stoned-driving bill at first appeared likely to pass. That's because pot use is expected to increase because of legalization for adults over 21. Also, the bill was weakened from previous years to give defendants a chance to argue they were sober despite blood levels above the legal limit.
The measure failed 1-4 Monday in a Senate committee. It had already passed the House.
Driving under the influence of any drug is illegal in Colorado. The bill's failure means that prosecutions will have to continue to rely on officer observation of impairment, such as erratic driving.
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