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.
See also:
Operation
Rearview mirror with compass.
The rearview mirror has an integrated display that shows the compass direction
in which the vehicle is pointing. Eight different directions are shown with the
abbr ...
Alarm
The alarm is automatically armed whenever
you lock your vehicle.
When armed, the alarm continuously monitors
a number of points on the vehicle. The following
conditions will set off the alarm:
...
New dynamic chassis
The new Volvo S60 is the most sporting Volvo ever built and during the
development process, the chassis team refined every single detail to fine tune
the driving experience. The result of their la ...
