Police have hailed this year's Hull Fair a huge success with reported crime dropping by nearly 50% compared with last year's event.
The number of crimes during the week-long event, which is attended by 750,000 people, fell from 54 in 2009 to 29 this year.
Humberside Police said this was the fourth consecutive year that figures had dropped significantly.
Officers worked with the council and other organisations to plan the fair.
Uniformed police officers carried out high-visibility patrols, supported by special constables and PCSOs.
A breathalyser was also used by officers for the first time to check if young people were drinking inside the alcohol-free zone.
Sgt Andy Parsons said: "The event was policed in a firm but fair manner.
"We showed from an early stage that we will not tolerate violent, disorderly or drunken behaviour in any way."
Councillor Mike Ross, Hull City Council's portfolio holder for community safety, said: "The latest fall in crime at Hull Fair demonstrates how effective and thorough the preparations were in staging such a popular, large-scale and successful event.
"I am delighted that crime is falling at Hull Fair. The planning and preparations will start now as we work towards further reductions at next year's event as well."