Passengers four years old or younger, or weighing 40 pounds or less, must be protected from moving parts. Bicyclists and passengers under 18 years of age must wear properly fitted and fastened helmets in public. Do not wear ear plugs or a headset covering both ears. You remove the ability to effectively react in traffic. This does not apply to hearing aids.
Pedestrians have the right of way on walkways.
Generally it is safer to ride on the street. Go slow on sidewalks. Follow lane markings. For example, don't turn left from the right lane, and don't continue straight in a right turn lane.