What is required for bicyclists when riding at night?

• A white headlight on the front and a red reflector on the back visible from at least 600 feet
  Explanation:

  "When riding at night, bicyclists must have a white headlight on the front and a red reflector on the back visible from at least 600 feet."
• A flashing yellow light on the front and a blue light on the back
• Only a red reflector on the back visible from 300 feet
• No lights are required at night