Rhode Island General Laws Title 12. Criminal Procedure § 12-2-3. Power to preserve order

(1) Preserve order within and upon the premises and cars of the corporation upon whose petition they were appointed;

(2) Arrest without a warrant intoxicated or disorderly persons frequenting the premises or cars and by their presence or conduct, or by profane or indecent language obstructing or annoying travelers using them; and

(3) Take the persons to the nearest police station or other place of lawful detention.