How do states use OBD II for emission inspections?

Many states connect a computer directly to a vehicle's OBD II system. The inspector can then read "faults." In some states, this type of inspection has replaced the tailpipe emission test.
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Seeing, Being Seen & Being Heard
Visibility is good in the C30, even bordering on exceptional. I didn't find
any objectionable blind spots, though the side mirrors could be a bit larger.
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How BLIS functions in daylight and darkness
Daylight
BLIS reacts to the shape of surrounding vehicles.
The system is designed to help detect
motor vehicles such as cars, trucks, buses,
motorcycles, etc.
Darkness
BLIS reacts to the headl ...
