65. (1) The occupation of the front seat of a motor vehicle by more than three persons is prohibited.It is also prohibited for any passenger so to place himself as to obstruct the driver’s vision or impede the handling of the vehicle.
(2) It is forbidden to open any door of a vehicle on the side of the traffic until all danger is past; it must be closed again as soon as the passenger or passengers have boarded or left the vehicle, and must never be open when the vehicle is in motion.
(3) No one shall have the right to travel in a passenger trailer in motion on a public highway.