From
The Durango Herald:
The surge of medical marijuana use in Colorado has started another debate in the state Legislature: What constitutes driving while high?
Lawmakers are considering setting a DUI blood-content threshold for marijuana that would make Colorado one of three states with such a provision in statute – and one of the most liberal, according to Rep. Claire Levy, one of the bill’s sponsors.
Under the proposal, drivers who test positive for 5 nanograms or more of THC, the psychoactive ingredient in marijuana, would be considered too impaired to drive if the substance is present in their blood at the time they’re pulled over or within two hours.
While it’s already illegal to
drive while impaired by drugs, states have taken different approaches to the issue. Twelve states, including Arizona, Michigan, Illinois, Iowa and Rhode Island, have a zero-tolerance policy for driving with any presence of an illegal substance, said Anne Teigen, policy specialist at the National Conference of State Legislatures. Minnesota has the same policy but exempts marijuana.
Nevada, which is among the 16 states that allow medical marijuana, has a 2 nanogram THC limit for driving. Pennsylvania has a 5 nanogram limit, but that’s a state Health Department guideline, which can be introduced in driving violation cases, Teigen said.