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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Getting Around
The C30 is a fun car to drive. It has a 227-horsepower, turbocharged
five-cylinder engine that makes 236 pounds-feet of torque, which is a lot of
power for such a small car. It's estimated to get ...
Other voice control settings found in MY CAR
• Voice user setting: Two user profiles can
be set by pressing MY CAR and going to
Settings
Voice settings
Voice user
setting. Select User 1 or User 2.
• Voice output volume: Press MY C ...
Exterior
Some V50 design characteristics were borrowed from early Volvo wagons. Still,
styling hasn't veered dramatically away from the V40. Volvo notes that "from
above, the body resembles the shape ...
