The ruling overturns an appellate-court finding that before the drivers agreed to submit to a breath test, troopers failed to warn them about the consequences of having THC in their blood.
OLYMPIA — The state Supreme Court has unanimously reinstated the drunken-driving convictions of two people who argued that the results of their breath tests should have been thrown out.
Judith Murray and Darren Robison were each convicted of DUI for failing alcohol breath tests in Snohomish County, but had their district-court convictions overturned by higher courts. The Court of Appeals found that before the drivers agreed to submit to a breath test, state troopers failed to warn them about the consequences of having certain concentrations of marijuana compounds in their blood.
The Supreme Court said Thursday that made little sense. The breath test is unable to measure THC concentrations, and the justices said it was therefore reasonable for the troopers to omit reference to marijuana from the warnings Murray and Robison received.
THC, or tetrahydrocannabinol, is the main psychoactive compound in cannabis.
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