Huge crowds are expected on Sunday.
Brighton & Hove Albion fans are advised to use public transport and where possible avoid the city centre on Sunday, with huge crowds expected to attend the seafront promotion parade.
Fans are advised to use buses where possible, cycle or walk into the city centre - or if they must travel by car, to park to the north, west and east of the city and walk into the centre of Brighton, ready for the parade.
Southern Trains will be providing additional carriages on services, but have warned those travelling by train to be patient, and that they may expect a long wait at Brighton Station - and should allow additional journey time if travelling by train.
Hove station, close to where the parade ends at 7pm, will be closed after the event. Meanwhile, there will be colour-coded queuing systems at Brighton station to help passengers wait for the right services.
Southern's passenger services director Angie Doll, said, "We’re so pleased for the club – Sunday will be a landmark for when tens of thousands of people are expected to travel to Brighton to watch the promotion parade.
"Fans should stagger their journeys if taking the train. We’ll be running as many extra coaches along the coast as possible, but there will inevitably be long waits at the station with colour-coded queuing systems in place."
Passengers are advised to allow more time for their journeys and to check before they travel on www.nationalrail.co.uk and www.buses.co.uk.