A type of cycle pedalled by hand, rather than by foot.
They can either be a specfically-designed cycle, or an adapted wheelchair, with an (attached) front wheel powered by hand pedalling. E-assist is also available for handcycles.
A handcycle will typically measure up to 2m long, by 0.8m wide. Inclusive design for handcycles will involve designing for Highways England's Cycle Design Vehicle.