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 can be operated safely under the right conditions.
( z1 possible :ARG1 ( z2 operate :ARG1 ( z3 wheelchair ) :ARG0-of ( z4 safe ) :condition ( z5 condition :ARG1-of ( z6 right ) ) ) )