Which of the following statements about parking lights is correct?

• Parking lights are intended for short-term use to indicate the presence and position of a parked vehicle.
  Explanation:

  "Parking lights are to be used for a short period of time, such as when a vehicle is left in a permitted zone, to show other motorists where a vehicle is parked."
• Parking lights are meant to be used for extended periods of time, such as overnight parking.
• Parking lights are designed to provide sufficient visibility for driving at night.
• Parking lights should be used as the primary illumination when driving in low visibility conditions.