The one arm drive wheelchair differs dramatically from standard manual wheelchairs, primarily in its unique propulsion system. In a traditional manual wheelchair, the user relies on both arms to drive the chair by turning wheels individually. However, the one arm drive model employs a mechanism that allows the user to operate the entire wheelchair using just one arm. This is often accomplished through a dual wheel system that allows for simultaneous movement, which reduces the effort required to navigate tight spaces or uneven terrains.