(1) No person may ride on the roof of any car, or on the side of an excess width car, or the side of a car with a load that extends more than 5'5" from centerline.

(2) The railroad company must provide written notice to the train stating the total number of cars with excess height or width.

(3) Notice to yard supervisors. Yard supervisors must be notified sufficiently in advance of the arrival of cars with excess height or width to enable them to take necessary precautions to safeguard employees in yard.