Police Chief Cathy Lanier say offenders could even face arrest if they do not provide an accurate name and address to officers.
Lanier says it will start out as a pilot program in the Metropolitan Police Department's 4th District, which includes most of Ward 4 and parts of Ward 5.
"There's nothing more frustrating to many residents than to see somebody just toss trash as they walk down the street sometimes just a few feet away from a trash can," says Lanier.
Police in the Fourth District will begin issuing warnings in May. And starting in June, they will begin writing tickets.
The law applies to both motorists and pedestrians. And the definition of "litter" will include cigarette butts.