BACtrack S50 - Manual (Page 5)

2 3
How does alcohol affect my driving?
we can’t emphasize enough how dangerous it is for you
to drink and drive. Your vision and your brain are the most
important factors in driving safely. If you jeopardize either by
drinking, and then you drive, you are likely to be involved in
a serious or fatal collision.
There is no safe way to drive under the influence of
alcohol. Even one drink can make you unsafe.
From California Department of Motor Vehicles (http://www.dmv.ca.gov)