Drivers are being warned to keep roads in Durham city clear or face the risk of having their cars towed away.
This year's event takes place today and a number of streets in and around the city will be closed to traffic for much of the day.
No vehicles - not even pedal cycles - will be allowed on the following routes between 6.30am and 8pm:
North and South Bailey;
Dun Cow Lane;
Elvet Bridge and New Elvet Bridge;
Pelaw Leazes to Baths Bridge.
Church Street, Hallgarth Street and Whinney Hill will also be closed to vehicles but some residential access only will be maintained when possible.
North Road, Flass Street and Sutton Street will be closed between 8am and 10am, and again between 3pm and 8pm.
Due to safety considerations, this year the road closures have been extended to include Claypath (between Prince Bishops Car Park and Providence Row) between 8am and 1pm.
An additional restriction sees parking banned from 6pm on Friday, July 8 in New Elvet, Old Elvet, Prison Green and Green Lane. These roads need to be kept clear of vehicles until 8pm on the Saturday.
Any vehicles remaining in the Elvet area after 6pm on Friday may be removed by the police under the contract vehicle recovery scheme. It will cost owners a recovery fee plus any storage charges to get their vehicles back.