The PSNI are advising people travelling to Portadown this weekend to plan their trip in advance, as additional traffic could lead to delays and parking issues.
A football match between Portadown and Cliftonville is due to take place at Shamrock Park, kicking off at 3pmon Saturday 14 December.
Officers anticipate that many shoppers will also be in the town searching for Christmas gifts.
A PSNI spokesperson said: “A build-up of traffic is to be expected in the Brownstown Road, Armagh Road (particularly between the junctions of Mahon Road and Northway roundabout) and Mahon Road areas both before and after the game.
“Supporters and shoppers are advised to leave additional time for their journey where necessary and be aware that demand for parking spaces will be high. Where possible, consider using public transport.
“We would ask that those driving to the match park with consideration for local residents and businesses, and that supporters are respectful and considerate whilst walking through residential streets convenient to the stadium.
“We want everyone to have a safe and enjoyable day and as such you’re likely to see a visible police presence in the town. Our officers will be out and about, engaging with the community and assisting with traffic management.”