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:
Safety & Reliability
The Volvo C30 is an Insurance Institute for Highway Safety Top Safety Pick,
which means it scores the agency's highest rating, Good, in front, side and rear
crash tests, and in a new roof-strength ...
Automatic locking
When the vehicle starts to move, the doors and trunk can be locked automatically.
This feature can be turned on or off by pressing MY CAR and going to Car settings
- Lock settings - Automatic door ...
Introduction
Display when the radio is receiving an HD Radio broadcast
NOTE
HD radio volume may fade in and out at times due to coverage limitations.
HD radio is a brand name registered by the Ibiquity d ...
