The definition of illegal according to the article:

Police powers will specifically target “throttle-only, high-powered e-motorbikes” which they say are “fuelling anti-social, behaviour, community frustration and serious injuries.”

The key difference police are seeking to enforce is the difference between e-bikes, a pedal-assisted bike and “illegal electric motorbikes” which have different power outputs.

Police will soon have the power to test these bikes on the spot with new “dyno units” which can “determine whether the e-bike’s power assistance cuts out completely at 25km/h as per the current law in NSW” they said in a statement.