Originally Posted By: Nate1979
Every new vehicle should be equipped with a breathalyzer starter device. The number of drunk driving would be almost zero. Cheat the system or drink after starting the car and face severe consequences.
I'm a DPS certified Ignition Interlock Provider.
Why would you want to put me out of a job? What did I ever do to you?
Several manufacturers have been working on alcohol detection systems.
One uses a "halo" to detect the presence of alcohol on a driver's breath.
If you use perfume, cologne, aftershave...etc... the alcohol on your skin will be detected and you cannot start.
One uses a skin monitor similar to the SCRAM bracelet. (aka: the Lindsay Lohan ankle bracelet) It takes a skin reading when you push the start button. Problem? If you use hand sanitizer (120-125 proof) before starting your car, you contaminate the sensor and you aren't going anywhere for a long time.
And then there are the breath sample devices.
Almost all the providers use an alcohol specific fuel cell. Only one (that I know of) uses the Taguchi cell. The T-cell monitors will fail you for countless things that are not alcohol. They are terrible. Fuel cells just read alcohol. But alcohol is present in a lot of things.
Out of the thousands of clients that I have, about 5% of them have problems providing the NHTSA approved breath sample size.
Others just cannot remember to NOT test with alcohol based mouthwash in their mouth.
And others will test with their mouths full of food or drink. How many times have I had a client report a problem with the unit just to have them bring it in and have the pump full of a beverage and the fuel cell saturated? Or they will test with a mouthfull of food. I've been working with these things for well over a decade. Yeast products will cause a reading. Yeast produces 3 things in its life cycle. It propogates its species, it produces carbon dioxide and .....wait for it.....alcohol.
I have to have a whole donut in my mouth to get any kind of significant reading. It is difficult to provide a test like that and you are certainly aware that the food is there. Yet I get at least one call a day from someone who got a reading from a donut.