The front light should be white and a rear one red or orange. Make sure you have a red rear reflector. Side or pedal reflectors are helpful too. Take adequate protection for changing weather conditions, i.e. rain, etc. Never ride against the flow of traffic.
Traffic laws apply to bicycles.
Observe stop signs, traffic lights and other posted signs. Be sure to signal turns, lane changes and stops. Avoid busy roads. Watch for turning automobiles. A vehicle turning left across your path may not see you.