Canadian police have not seen a spike in cannabis-impaired driving since legalization. (Photo by THE CANADIAN PRESS)

Ottawa not looking at changing impaired driving laws despite study on THC levels

Feds say cannabis driving laws are ‘based on strong and indisputable evidence that cannabis is an impairing drug’

The federal government doesn’t plan on changing the legal THC limit for drivers, even after a B.C. study that suggested no connection between now-illegal amounts of the compound and risk of crashing.

A University of B.C. study, published in June in the journal Addictions, looked at THC amounts in blood samples from more than 3,000 people who were injured behind the wheel.

Of the 1,825 drivers deemed responsible in crashes, researchers found that drivers with less than five nanograms of THC, the psychoactive ingredient in cannabis, per millilitre of blood had no increased risk of crashing.

READ MORE: Low levels of THC in marijuana don’t increase car crashes: B.C. study

Canadians laws make driving with between two and five nanograms per millilitre a summary offence with a fine up to $1,000.

Having more five or more nanograms has a minimum fine of $1,000 and a max sentence of 10 years in jail for the first offence.

Researchers weren’t able determine if more than five nanograms increased the risk of crashing because only 20 drivers had that much, an inconclusive sample.

A spokesperson for federal Justice Department told Black Press Media that cannabis driving laws were “based on strong and indisputable evidence that cannabis is an impairing drug.”

“The prohibited levels also take into account the approach taken in other jurisdictions, including jurisdictions where cannabis has been legalized,” spokesperson Ian McLeod said in an email.

The fines for 2 nanograms or less are a “a precautionary approach taking into account the best available scientific evidence related to THC,” while the five nanogram amount indicates recent use, McLeod said.

According to UBC researcheres, THC levels peak above 100 nanograms per millilitre within 15 minutes of smoking pot and then drop to two nanograms or less within the next four hours.

Levels of THC take about eight hours to drop to two nanograms or less after consuming cannabis.

READ MORE: Early data suggests no post-legalization spike in drug-impaired driving charges

READ MORE: Driving with dope: Police talk rules on cannabis in the car

READ MORE: After 10 years of fighting drunk drivers, Alexa’s Team asks: What about pot?


@katslepian

katya.slepian@bpdigital.ca

Like us on Facebook and follow us on Twitter.

Just Posted

Two applications for pot shops in Duncan get green light

The Original Farm and Buds and Leaves would be the city’s first marijuana stores

Baker and Barbarians take Paris World Games by storm

Duncan rugby player helps Canadian side to gold

VIDEO: Lake Cowichan council to grill Catalyst July 23 on ‘end run’ around weir pumping agreement

Councillors want community out in force at meeting to hear what’s going on with the weir

Valley field hockey players bring home gold from nationals

Cowichan U18s help Island to unprecentend first-place finish

Duncan Grande Parade draws a crowd

Entries old and new enjoyed by a big audience

Body, burning truck found near northern B.C. town

RCMP unsure if the two separate discoveries are related

Nanaimo-Opoly will let board game players deal Harbour City properties

Victoria’s Outset Media and Walmart Canada partner on local edition of popular game

Couple found dead along northern B.C. highway in double homicide

Woman from the U.S. and man from Australia found dead near Liard Hot Springs

UPDATE: West Kelowna fawn euthanized, not claimed by sanctuary

Gilbert the deer has been euthanized after a suitable home was not found in time

BC Wildfire Service warns wet weather no reason to be complacent

Fire risk currently low for much of B.C. compared to same time over last two years.

Bank of Canada lowers qualifying rate used in mortgage stress tests

Home sales softened last year after the federal government introduced new stress test rules for uninsured mortgages

Port Hardy RCMP cleared in arrest that left man with broken ribs, punctured lung: IIO

The IIO noted the matter will not be referred to crown counsel for consideration of charges.

B.C. man pleads guilty in snake venom death of toddler

Plea comes more than five years after the incident in North Vancouver

Most Read