It shall be unlawful for any person, except employees thereof, to climb or to attempt to climb upon or to board or attempt to board any locomotive, engine, car, coach or train of cars while the same is in motion or for any person other than a regular passenger or employee of the railroad to ride on or upon any locomotive engine, car, coach or train of cars while same is operated within the corporate limits.
('88 Code, § 18.804) Penalty, see § 70.99