Specifications

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iii. User will then exhale into the handheld breathalyzer for 5 seconds. At the
end of the interval, if a sufficient breath sample was provided, a message
indicating a successful test, and the resulting BAC value, will be displayed
to the screen. If a sample was insufficient, a message requesting the user
to re-submit will be displayed
iv. The handheld unit will wirelessly link to the automobile unit, and pass it a
message, based on the results of the test. If a successful test was
performed, then the “ignition” will be enabled, and the car will be able to
drive.
v. Assuming the user pass the breath test and the engine of the car has
been started. After a random period of time, a retest will be requested by
the automobile unit, indicated by a solid red LED on top of the car turning
on.
vi. If the rolling retest fails, or is not submitted within a short period of time
(approximately 2 minutes), the car will enter the Alarm State, which
consists of the status LEDs and the headlights flashing at an alternating
pace. The car will still be able to drive, however this behavior indicates to
local law enforcement that the driver is in “distress” and should be
“helped”