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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Operation
Controls and display
1 - Resume previous settings, increase speed (each additional press increases
speed by 2 - 1 mph (approximately 2 km/h). 3 - Standby mode on/off 4 - Set time
interval 5 ...
Child restraint systems
Child restraints
Infant seat
There are three main types of child restraint
systems: infant seats, convertible seats, and
booster cushions. They are classified according
to the child's age an ...
Automatic transmission – shift gatepositions
Shift gate positions
Depress the button on the front of the gear
selector knob to move between the R, N, D,
and P positions.
Kickdown
Automatic shift to a lower gear (kickdown) is
achieved by ...
