The motor shouldn’t be capable to propel the bike when it’s travelling at more than 15.5mph. Any e-bike that doesn’t drop into These rules is taken care of as an electric motorbike or moped. We have even made a list from the best electric motorbikes available at this time, https://www.electricscooter.ltd/eec-coc-20000w-popular-motor-scooter-electric-motorcycle/