(Intermediate): This position is also used for normal
driving. However, it reduces vehicle speed without
using the brakes for slight downgrades where the vehicle
would otherwise accelerate due to steepness of grade.
If constant upshifting or downshifting occurs while
driving up steep hills, this position can be used to
prevent repetitive types of shifts. You might choose
I (Intermediate) instead of D (Drive) when driving on hilly,
winding roads and when towing a trailer, so that there is
less shifting between gears
