Landowners could not invoke Civil Code 836 recreational use immunity to bar a personal injury action by a minor female who was injured riding her motorcycle on the landowners’ motocross track because the landowners’ 18-year old son who lived with them had invited the plaintiff onto the property to use the motocross track. When a child of the landowner is living with the landowner on the landowner’s property and the landowner has consented to this living arrangement, the child’s express invitation of a person to come onto the property operates as an express invitation by the landowner within the meaning of section 846(d)(3), unless the landowner has prohibited the child from extending the invitation.