FANS on the move can tune into Red Dragon FM on 103.2FM or Real Radio on 105-106FM for traffic and travel news on the day.
Cars should leave the M4 at Junction 33 and follow the signs to park and ride sites allocated to their team.
Buses will take fans to within a 10-minute walk of the stadium.
Car parks open at 7.30am, with the first bus into Cardiff at 8am. The cost of £5 per car includes the bus journey.
Coaches should leave at Junction 32 and follow signs to Cathays Park, where up to 400 spaces are available one mile from the stadium.
Traffic Wales runs a travel hotline on 0845 6026020.
Police warned supporters making the trek to Wales to let their neighbours know they are away, so they can keep a check on their homes. Make opportunist thieves think someone is at home!