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:
Interior design
Scandinavia is famous for its innovative interior designs, and the Volvo S80
epitomises elegant Scandinavian luxury.
The interior of the car has a clear focus on exclusivity and comfort. The
sof ...
Cruise control
Steering wheel-mounted controls and display
1 - Standby mode 2 - Resume set speed 3 - Deactivating 4 - Activate/set
speed 5 - Set speed indicator (parentheses indicate standby mode)
Engaging ...
Vanity mirror
Vanity mirror with lighting
The light comes on automatically when the cover is lifted. ...
