Segway PT i2 Getting Started Manual page 97

You should not ride backward except to maneuver a few feet.
Instead, turn and ride forward.
3. With your spotter standing close by, practice going forward and
backward a short distance in each direction. Be careful not to run
the Wheels into any wall or object. This could cause you to fall.
Do not turn or go fast when maneuvering backward.
NOTE:
WARNING!
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