Philips Develops Roadside Drug-Testing Device

They used the word "traces" three times in this article. What constitutes a trace?

If I smoked yesterday and there are traces of cannabis molecules floating around does that mean I am driving under the influence?

Where is the line drawn between privacy and control?

I have an idea: test driving ability and reaction time. I could not care less what molecules are in the spit of somebody I share the road with. What I care about is the idiots who crash into other drivers, for whatever reason. Lets actually make people drive responsibly, or no driving for them at all on the public roads. There are responsible marijuana users, for example, who drive safely and should not be penalized based on their saliva, just as there are "sober" drivers who constitute immediate dangers to the rest of us. If we treated drivers who are reckless with cars the same way we would treat someone who recklessly fires a gun into a crowd we might not have to find excuses like pot use to take them off the road. If you crash into me and it was reckless, I don't need a drug test to tell me you shouldn't get to do it again the next day to another innocent person.

This is one step closer to what is needed. If it could determine if you are high at that moment legalization of pot would be right around the corner. This is what the gov is waiting for. Tax our weed please just let us smoke in peace... At least the responsible ones.

assumed this gadget was out longtime ago, sure drivers are already aware of the danger to them and others

that aint worth a damn what if I smoke a joint then drive four or five hours later.

Cannabis is one of the top cash crops. Apparently many, many people are still in the closet. It's time to come out of the closet and join the conversation.

It's time to work to get cannabis reclassified. Cannabis is not illegal due to truth! Cannabis is illegal due to lies, distortion and spin.

Some uniformed individuals want to be smug about the use of cannabis. It's time to wipe the smug off their mugs, with facts. Fact is 'they' have been misled! Many have forced members of their families to turn to alcohol, over cannabis, based on lies. Facts matter. The truth matters most. Cannabis should not be illegal for adults!

next thing ya know the cops will be knocking on my door , wanting me to spit for them? road blocks with drug tests=CONTROL

This would be great, say if they wanted to legalize marijuana and regulate it. It would be a good way to determine if someone was under the influence while driving. Much like a breathalyzer. Or to find out if someone underage was under the influence.

saliva-based drug tests have been around for years; they have a very limited testing time range, meaning that you would have to smoke or snort or what have you within the last 24 to 72 hours, which i suppose serves its purpose.

Awww. The least they could have done was make one that required a urine sample.