Colorado lawmakers pass HB 1325 setting marijuana driving limit

DENVER - After years of debate, state lawmakers have voted for a limit on the amount of marijuana a person can have in their system and legally drive.

The state Senate passed House Bill 1325 by a vote of 23-12. That bill says drivers with 5 nanograms or more of THC per milliliter of blood would be considered impaired to drive. THC is the psychoactive ingredient in marijuana.

The level of intoxication would be determined by a blood test.

The driving bill has failed at least five times in the past. The bill has been fiercely debated because of questions over whether THC blood tests are a fair gauge of impairment.

The bill now goes to Governor John Hickenlooper for final approval. A spokesperson for the governor said Hickenlooper will sign the bill.

According to the Associated Press, Nevada and Ohio have a 2 nanogram THC limit for driving.

Last November, voters in Colorado passed Amendment 64 making marijuana effectively legal for recreational use in Colorado. It is still illegal under state law to buy or sell marijuana in any quantity or to consume it in public. Adults over 21 may now possess up to an ounce of marijuana, or six plants.

State lawmakers are still debating how to tax marijuana and how to regulate pot shops.

The legislative session ends at midnight Wednesday.

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