AM radio reception
AM signals, because of their low frequency, can bend around objects and skip along the ground.
In addition, the signals can be bounced off the ionosphere and bent back to earth. Because of these characteristics, AM signals are also subject to interference as they travel from transmitter to receiver.
Fading: Occurs while the vehicle is passing through freeway underpasses or in areas with many tall buildings. It can also occur for several seconds during ionospheric turbulence even in areas where no obstacles exist.
Static: Caused by thunderstorms, electrical power lines, electric signs and even traffic lights.
See also:
Readiness for Inspection/Maintenance (I/M) test
WARNING
A vehicle equipped with All-Wheel Drive
(AWD) should never be tested using a
two wheel dynamometer (such as the
dynamometers used by some states for
emissions testing), or similar equipme ...
Heated seats (if so equipped)
Do not use or allow occupants to use the seat heater if you or the occupants
cannot monitor elevated seat temperatures or have an inability to feel pain in those
body parts in contact with the s ...
Measurement of weights
Secure loose items to prevent weight shifts
that could affect the balance of your
vehicle. When the vehicle is loaded, drive
to a scale and weigh the front and the rear
wheels separately to determ ...