The Wickham horse fair will take place in The Square on Monday 20, May where horses are bought and sold.
The fair is traditionally run by members of the travelling community who come from across the the country to trade the animals and parade them.
Hampshire Police has warned of the possible traffic disruption that will see several roads in Wickham closed from 5am until 8pm due to crowds and horses.
Permits have been given to residents to allow them to get to their homes through the closures.
Chief Inspector Andy Houghton said: "This event is steeped in history for Wickham and we have been working closely with Hampshire County Council, Winchester City Council, Wickham Parish Council and other agencies to help maintain a safe environment for visitors and residents to enjoy the day."
Accident, a single vehicle and a pedestrian involved on A28 Sturry Road both ways at Vauxhall Road / Stour Crescent.
Service suspended on Hovertravel between Ryde and Southsea due to adverse weather conditions.
Ringwood Road (A336) in Hampshire is closed, due to an accident involving a bus and a pedestrian near Calmore Road.
Selsey Road in both directions closed due to building fire between Green Lane and B2145. Has been closed since before 04:00, which is affecting traffic between Sidlesham Common and Donnington.
The A259 blocked with delays after an accident at Seven Sisters Country Park. The road is blocked by the car park for the Country Park.
Delays on the A259 near Seaford. The road is blocked at the Seven Sisters Country Park.
One lane is closed on the M25 clockwise in Kent after junction 5 for the M26/A21. Congestion stretches to junction 4 for Orpington. It's due to an accident and is causing an additional travel time of 30 minutes.
A272 Cowfold Road is closed in both directions between A23 (Bolney Cross) and A281 (Village Hall roundabout) due to an accident involving a milk tanker. The road has been closed since 4am when the vehicle left the carriageway.
M3 Northbound exit slip road partially blocked, queueing traffic due to broken down vehicle at J9 A34 (Winnal Roundabout).