LONGMONT, COLO. (AP) -- Colorado police say they are encountering more drivers who are either under the influence of marijuana or are carrying the drug illegally with them in their vehicle.
Authorities say drug evaluations of impaired drivers that turned up positive for marijuana increased from 2009 to 2010.
State Department of Transportation spokeswoman Heather Halpape told the Longmont Times-Call that from 2009 to 2010, the number jumped from 391 positive tests for marijuana to 599.
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Information from: Daily Times-Call
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