A harness vehicle configured to allow a first user to pull a loadin preferred embodiments a disabled personover nature, hiking, and other trails, paths, and terrain. The harness vehicle includes: a first frame, load portion, and wheel; and a second frame configured as a back-pack-styled harness and that is releasably attachable to the first frame so as to allow a user to pull the first frame. Embodiments of the harness vehicle are configured to allow a user to convey a load generally hands-free.

A brake device including a brake unit; a contact device engageable by the brake unit and movable relative to the brake unit, wherein the brake unit includes at least one activation device and at least one brake member that includes a transmission member and a brake shoe that is pivotably supported in a pivot bearing at an end of the at least one brake member, wherein the at least one activation device engages the transmission member to move the at least one brake member towards the contact device until the brake shoe contacts the contact device in an activation position of the at least one brake member and the brake shoe, wherein the pivot bearing is arranged at the at least one brake member so that the pivot bearing is movable towards the contact device together with the transmission member.

A wheelchair including a steering assembly configured to selectively attach to the wheelchair, the steering assembly including a steering member, a front wheel operably connected to the steering member, a frame assembly configured to carry the steering member and the front wheel, and a mounting assembly coupled to the frame assembly, and a drive assembly coupled to the wheelchair. The drive assembly is configured to operate in a first configuration in response to the steering assembly being detached from the wheelchair, and the drive assembly is configured to operate in a second configuration in response to the steering assembly being attached to the wheelchair.