Officers across Alberta are conducting a roadside CheckStop blitz today in local detachments and on highways.
Drug Recognition Experts will be on hand to identify and assess impaired drivers who are under the influence of prescription and illegal drugs.
Reseach suggests that drug impaired driving is becoming as common as drunk driving.
A 2012 study by Dalhousie University found that smoking weed three hours before driving nearly doubled the risk of a driver getting into a crash.
Police will also be looking for speeders, dangerous and distracted drivers, and people not wearing their seat belts.