Quote:
Originally Posted by 4X4
Dude told me to keep blowing until it beeped. It took ~5 seconds...
And your second point is bang on. It should be a law at a traffic accident. If a proper breath sample is not given, call an ambulance immediately, ship the driver to the hospital and let a pro take a blood sample.
|
Depending on the Road Side screening device used, some models will determine how much flow is blowing through and wont beep until the flow rate is slowing down indicating that a deep lung breath sample will be collected. I blew into several of the devices (only so that I could be qualified to use them) and I can blow for about 9 secs. One of my coworkers could only blow for 3 secs. Depends on lung capacity.
But I agree that a law should be passed that blood samples should be mandatory in these kinds of cases. BAC in a blood sample doesn't lie.