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:
Uniform Tire Quality Grading
Quality grading information
ALL PASSENGER VEHICLE TIRES MUST
CONFORM TO FEDERAL SAFETY
REQUIREMENTS IN ADDITION TO THESE
GRADES
Quality grades can be found, where applicable,
on the tire sid ...
Introduction
The park assist system is designed to assist
you when driving into parking spaces, garages,
etc. It utilizes ultrasound sensors in the front
bumper and rear bumper(s) to measure the distance
t ...
Introduction
Volvo recommends the use of Volvo trailer hitches that are specially designed
for the vehicle.
NOTE
See page 337 for the maximum trailer and tongue weights recommended by Volvo.
Observe t ...
