Stoned driving

A federally-funded study has found that biofluid and traditional sobriety tests are unreliable at measuring cannabis impairment in drivers.

A first-of-its-kind study published this month found that CBD has no negative impacts on driving while THC intoxication lasts for about four hours.

The Canadian Automobile Association (CAA) has released a public education campaign that discourages teens and young adults from driving after eating cannabis-infused edibles.

AAA is giving $100,000 in grants to various Illinois agencies to study and prevent stoned driving in the newly legalized state.

A Colorado DOT study found that cannabis consumers consider stoned driving to be less dangerous than drunk driving and are generally skeptical of state laws related to cannabis and driving.

Police in Edmonton, Alberta have reported a slight uptick in cannabis-impaired driving arrests over the last year.

A recent study from the Centre for Addiction and Mental Health in Toronto has debunked a myth that cannabis can influence drivers up to 24 and even 48 hours after consumption.

Post-legalization policies proposed by the American Trucking Associations would lift restrictions on cannabis research, allowing for studies into the impact of cannabis-impaired driving.

A Pennsylvania judge has ruled that cannabis odor alone does not justify a vehicle search if the driver has presented a medical cannabis card.

Canada has approved a new device to test drivers for potential cannabis intoxication; the test will be used to validate further investigation, either via a drug recognition evaluation or blood sample.

The majority of charges filed under the new law have pertained to the presence and placement of cannabis within the vehicle, not impairment.

The legal counsel for Vermont Gov. Phil Scott says that recently passed legislation establishing adult-use cannabis sales in the state defies the state Constitution.

Connecticut lawmakers have advanced three cannabis bills out of committee: one to allow possession and expunge low-level possession charges, one establishing a regulated marketplace, and one to ensure employers can bar cannabis use from the workplace and to create a DUI test for cannabis.

A stoned driving study launching in Colorado hopes to help determine an accurate roadside cannabis intoxication test.

Massachusetts Gov. Charlie Baker is pushing a bill that would make the penalty for refusing a roadside drug test the same as refusing a breathalyzer test — despite a lack of accurate standards for testing cannabis impairment.

A Colorado legislator listened to criticisms of his cannabis DUI bill and decided to withdraw the legislation.

Massachusetts regulators are attempting to align laws for driving under the influence of cannabis with existing alcohol laws.