Eye-catching signs warning Preston people not to swear or drop litter have gone on display across the city.
Safer Preston Partnership's campaign, called Respect Our City, will run throughout the Christmas period and beyond.
It also urges people to keep Preston free of dog fouling and anti-social behaviour.
The signs can be found on buses, lampposts, litter bins, shops, restaurants, pubs and clubs and will contain the 'Rules 'round town'.
Councillor Kate Calder, cabinet member for community safety and community engagement, said: "We want to put a stop to anti-social behaviour such as fighting, littering and swearing around town so that everyone can enjoy a happy, safe Christmas.
"We want people to enjoy the festivities, drink safely and behave in a responsible way.
"The police can use a number of enforcement methods if they catch anyone behaving in an anti-social way, so make sure you respect your city this Christmas."
Inspector Stuart Whittle from Lancashire Constabulary said: "We hope that the Respect our City campaign will encourage people to think about their behaviour and take pride in our City."
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