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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Child safety
WARNING
• Do not use child safety seats or child
booster cushions/backrests in the front
passenger's seat. We also recommend
that children under 4 feet 7 inches
(140 cm) in height who have outgro ...
Child safety
WARNING
Do not use child safety seats or child booster cushions/backrests in the
front passenger's seat. We also recommend that children under 4 feet 7 inches
(140 cm) in height who ...
Visual indicator
The audio system’s display gives an overview of the vehicle’s position in relation
to a detected object.
The marked sectors in the display indicate that one or more of the sensors has
detected an ...
