Nebraska Revised Statute 60-640
Motor-driven cycle, defined.
(1) Motor-driven cycle means every motorcycle, including every motor scooter, with a motor which produces not to exceed five brake horsepower as measured at the drive shaft, mopeds, and every bicycle with motor attached except for a bicycle as described in subdivision (2) of section 60-611. Motor-driven cycle shall not include an electric personal assistive mobility device.
(2) For purposes of this section, motorcycle does not include an autocycle.