> To the best of my knowledge, there is no reliable way to test whether a driver is actively intoxicated from pot Police here use a spit test; supposedly it re

> To the best of my knowledge, there is no reliable way to test whether a driver is actively intoxicated from pot Police here use a spit test; supposedly it reveals use within the past 24 hours. But as far as I know, it can/will test positive for a regular user that did not smoke weed in the past 24 hours. So I guess you are right; it is not reliable (but it'll still get you convicted..)