CHEYENNE, Wyo. (AP) — Some people getting stopped for traffic violations in Wyoming's capital city are receiving "throwback" warnings instead of real tickets this week.

The unofficial traffic warnings being issued by the Cheyenne Police Department include informing violators they might face penalties such as "leaving town by sunrise" or "donating two bits to charity."

The "throwback" traffic warnings are being issued through Sunday as part of the city's 150th anniversary celebration this year.

One motorist caught Wednesday running a stop sign, which can result in a $100 fine, instead received a warning for driving a "carriage in an inconsiderate manner."

While the slips of paper are not a ticket, department spokesman Officer Kevin Malatesta says it's hoped the warnings also will encourage people to drive safely.