What is a Self-Propelled Wheelchair?

A self-propelled wheelchair is designed with larger wheels at the back of the chair.  There is push-rims which allow the occupant to easily manoeuvre themselves along using their upper body strength.  Self-propelled wheelchairs are primarily designed to allow the occupant to propel themselves along with-out the need of someone pushing the chair.

When needed, the wheelchair can be pushed by someone, as these chairs normally have pushing handles on the back as well.  The larger wheels on the back can also be an advantage when overcoming kerbs or other obstacles.