The rules for e-bikes on public roads, side-walks, and pathways are under state jurisdiction, and vary.
E-Bike'S In BC pronice, Canada
The current regulations define an "electric bicycle", a bicycle equipped with fully operable pedals and an electric motor of less than 500 watts, detailed info please see as bellows:
Motor Vehicle Act
MOTOR ASSISTED CYCLE REGULATION
[includes amendments up to B.C. Reg. 56/2018, March 22, 2018]
1 The motors of a motor assisted cycle must
[en. B.C. Reg. 56/2018, s. 1.]
[am. B.C. Reg. 56/2018, s. 2.]
4 A motor assisted cycle must not be equipped with a generator, alternator or similar device powered by a combustion engine.
6 The motor drive systems and all energy storage devices of a motor assisted cycle must be secured to prevent movement in any direction relative to the motor assisted cycle while the motor assisted cycle is operating.
[am. B.C. Reg. 56/2018, s. 3.]
7 All electrical terminals on a motor assisted cycle must be completely insulated or covered.
[Provisions relevant to the enactment of this regulation: Motor Vehicle Act, R.S.B.C. 1996, c. 318, s. 182.1]