DENVER (AP) -- A marijuana driving limit in Colorado is headed to the governor's desk -- on the measure's sixth try through the Legislature.
The state Senate gave final approval Tuesday to a bill to say juries can assume someone is impaired by marijuana if their blood contains more than 5 nanograms per milliliter of THC, marijuana psychoactive ingredient. The bill has been fiercely debated for several years in Colorado because of questions about whether THC blood tests are a fair gauge of impairment.
The Senate also approved a pot tax of more than 25 percent on the newly legal drug.
The Senate planned an afternoon vote on a long bill to regulate pot, from potency labels to rules for who can be in the business.