How to operate a wheelchair safely outdoors<br>Stay on even surfaces. Uneven surfaces can make any wheelchair get off balance. Even when someone is pushing a wheelchair, an uneven surface can cause harm.
Wheelchairs have an 100% safety track record
( z1 have :ARG0 ( z2 wheelchair ) :ARG1 ( z3 record :mod ( z4 track ) :topic ( z5 safe ) :mod ( z6 percentage-entity :value 100 ) ) )