You can use an electric skateboard on the road, but always take precautions. Riding on the road means you need to look out for cars, bikes, and pedestrians. The skateboards themselves are designed to be used on a road. If your road is coarsely paved, has many stones, gaps, or cracks, then you might consider City Rider - an electric skateboard built for uneven surfaces.
Using lights attached to your skateboard and/ or body and avoiding to wear dark clothing will help others see you.