Any person not a passenger or intended passenger, employee or agent of a railroad, or an officer of any city or town, or sheriff or his deputy, or such persons as may go upon the train to act as escort to assist some person who has taken passage, who jumps on or off any train while in motion, shall be guilty of a misdemeanor, and, on conviction, shall be punished by fine and imprisonment, either or both, at the discretion of the court, not to exceed $25.00 fine and 30 days in the county jail.