Under what conditions can a child younger than 18 years of age occupy the bed of the towing truck or trailer?

• When the vehicle is operated in a parade or in an emergency or on a beach
• When the vehicle is transporting farm-workers from one field to another field on a farm-to-market road, ranch-to-market road, or county road outside a municipality
• When that vehicle is the only vehicle owned or operated by members of a household
• All of the above
  Explanation:

  "It is a defense against prosecution for operating or towing a vehicle if it is in a parade or an emergency, transporting farm-workers from one field to another on a farm-to-market, ranch-to-market, or county road outside a municipality, on a beach, or if it is the only vehicle owned or operated by the members of a household."