Ahead of marijuana legalization next summer, Saskatchewan has started to introduce legislation to deal with drugged driving.

The proposal is for a zero tolerance on drugged driving. Penalties could include an immediate driver's licence suspension, a 30-day vehicle seizure or a 60-day seizure if the person is also impaired by alcohol.

New saliva screening devices are expected to be rolled out next year to test for drug use while driving but officials say they will be set at a level that will not detect past use of drugs, only use in a more recent time frame.