RE:RE:RE:RE:RE:RE:RE:RE:RE:it's gonna happenthats a good description of most people stoned every hour of the day guys no but close breath is the answer regardless it measures the thc that gets you high for a certain amount of time that corralates with amount of time people are impaired whether or not different people can drive ok or not in shorter time frames doesn't matter .some people who drink every day can blow 1.20 and drive just fine after 4 beers but will blow over so zero thc for the time frame for all (proving recent use) maybe to simple for people in this age of it can;t be that simple