The drugalyzers are expected to be ready by the end of the year and will be able to detect up to 13 drugs from cocaine and crack to certain prescription medications in a driver's saliva. An advisory panel is devising penalties for operators found to be impaired and considering the idea of differing penalties for different drugs various, but a one-year ban, jail time and a four-figure fine are looking like front runners.
The run-of-show would be that if a policeman pulls you over and suspects impairment, he'll test for alcohol first. If, in the policeman's eyes, that doesn't explain your horrid driving, he'll test for drugs. If you fail the drug test you'll be taken to the station and tested again on their fixed machine, to verify the findings. And if you decline to be tested at all, it'll be considered the same as declining a breathalyzer.