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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Using seat belts
Adjusting the seat belt
Volvo, the inventor of the three-point seat belt,
urges you and all occupants of your vehicle to
wear seat belts and ensure that children are
properly restrained, using a ...
IR-reflecting windshield
Section of the windshield where the IR-coating is
not applied
An optional factory-installed infrared (IR) coating
can be applied to the windshield to help
protect the cabin from the sun's heat a ...
Owner maintenance
Periodic maintenance requirements and intervals
are described in your vehicle's Warranty
and Service Records Information booklet.
The following points can be carried out
between the normally sc ...
