Prohibits the transportation of dogs in the back of a motor vehicle intended for any load unless such space is enclosed or has side and tail racks to a height of not less than forty-six inches extending vertically from the floor; the motor vehicle has installed means of preventing the dog from being ejected; or the dog is cross-tethered to the vehicle or is protected by a secured container or cage, in a manner which will prevent the dog from being ejected from the motor vehicle; imposes fines for violations.