South Carolina law states that any e-bike that is being operated on a publicly owned path, sidewalk, or road must have a permanent label indicating the bike's horsepower and maximum assisted speed.
Isle of Palms Municipal Code prohibits e-bikes on the beach during the peak summer season (between Memorial Day and Labor Day).

Bikes have to follow the same rules of the road as a car
Bicycles and e-bikes must have a red rear reflector, and a headlight at night
Ride with the flow of traffic
E-Bikes are heavier, handle differently, and need longer stopping distances. Practice before operating on public roads.
Wear a helmet
Yield to pedestrians
Walk your bike when using a pedestrian crossing
Watch out for cars
Use hand signs when turning or stopping