The average motor vehicle should have:

• Two red stop lights visible from 500 feet when the brakes are applied
  Explanation:

  "The average motor vehicle should have two red stop lights (brake lights) visible from 500 feet when the brakes are applied."
• One red stop light visible from 400 feet when the brakes are applied
• Two white stop lights visible from 300 feet when the brakes are applied
• One white stop light visible from 100 feet when the brakes are applied