Wear Valley District Council is appealing for visitors to Bishop Auckland's Firework Spectacular on November 2 to use public car parks.
In previous years, people in Etherley Lane and Toronto have experienced problems with people leaving cars on private drives, blocking rights of way and parking dangerously.
This year a warning has been issued that police will give out tickets for poor parking, and some cars could be towed away.
This year's event takes place at the rugby club's West Mills playing fields, starting at 5.30pm.
A limited number of disabled parking spaces are available, but passes must be obtained in advance from Wear Valley District Council's community services department on (01388) 761541.
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