It’s time to debunk the myth that driving after using marijuana is safer than driving after consuming alcohol.  

A study by the Canadian Centre on Substance Abuse shows that cannabis creates problems when it comes to driving including tracking, reaction time and concentration.  

Cpl. Michael Zufferli with Red Deer RCMP said even if you have a prescription for medical marijuana, it's no excuse.

“It would be the same as if you were prescribed a narcotic by a doctor and say it’s pain medication. If you’re impaired, you’re impaired it doesn’t matter if you have a prescription you’ll still be arrested for impaired operation or still be charged. The fact that you have a doctor’s note won’t prevent a conviction in court.”

Zufferli added drivers who are pulled over on suspicion of drug impairment may be asked to complete a Standardized Field Sobriety Test.

“It’s mandatory under law that you complete these tests, refusal carries the same penalties as if you were deemed to be impaired. After these road tests if there are grounds to arrest the person for being impaired or it will result in a driving suspension for their drug use.”

According to Alberta Transportation, the province is slightly above the national average for drugged driving at 41 per cent.   82 drivers killed in collisions during 2012 tested positive for drugs.