The Millennium Stadium is the stage for a feast of rugby this weekend and fans are advised to plan their journeys into the city centre early to avoid congestion and costly parking charges.
The semi-final double header sees Sale Sharks take on Leicester Tigers at 2.30pm and Cardiff Blues face the Ospreys at 5.15pm on Saturday March 24.
An estimated crowd of 50,000 is expected at the stadium and the best way for fans and visitors to travel to Cardiff is on public transport.
If you do bring your car into the city, fans should consider car sharing and using the park and ride services.
The park and ride sites can be accessed from J33 of the M4. You can park at County Hall (Green car park) where the drop off point is on Callaghan Square in the lay-by by Eversheds. Park and ride costs £5 per car which includes a return journey on the bus.
Coaches should leave the M4 at J32 and use the parking at the Civic centre. Parking opens at 9am. The last bus will leave the pick-up point at 8.30pm, with the car park closing at 9pm.
There will be a small road closure of Westgate Street from 1pm - 8.30pm.
The following roads will be closed for coach parking between 6am and 8pm -
King Edward VII Avenue from its abutment with Boulevard-de-Nantes to its junction with Corbett Road;
Museum Avenue from its junction with Gorsedd Gardens to its junction with Corbett Road;
City Hall Road / College Road from their junction with Museum Avenue to their junctions with North Road.
Cardiff Blues face Newport Gwent Dragons in a huge European Rugby Challenge Cup quarter-final on Saturday, April 4 - and you can celebrate pre and post-match with Cardiff Blues and the Cardiff Blues Supporters' Club at BT Sport Cardiff Arms Park!
Welsh Pro Rugby's main sponsor BT Sport will help make it a Welsh derby day to remember for thousands of rugby supporters at the big European quarter-final with the creation of a buzzing Family Village at Rodney Parade.
Cardiff Blues are hosting a special Open Evening this Wednesday night at BT Sport Cardiff Arms Park to give prospective students and parents the chance to discover more about our new and exciting rugby education programme.
Our Cardiff Blues Rugby Camps return this Easter to give children right across our region the opportunity to participate in rugby during the holidays - and after selling out our last two camps you can book NOW to avoid any disappointment!
Supporters are being invited to get on their bike and gear up for an epic charity bike ride from Cardiff to Paris this June - with the last few places now available to raise vital funds for #StayStrongForOws
The players at Cardiff Blues will be hoping to play with some true Gallic flair for the rest of the Guinness PRO12 season - after the region teamed up with a successful French bistrot in the Welsh capital.
Cardiff Blues will be celebrating St David's Day when the region faces Edinburgh Rugby at BT Sport Cardiff Arms Park on Sunday afternoon (kick-off 12.45pm) - with hundreds of children invited as part of our Regional Schools Day.
Fine footwear retailer The Brogue Trader - one of the official sponsors of Cardiff Blues - is celebrating after being recognised by the British Footwear Association at its annual Footwear Industry Awards.
Battling Cardiff Blues produced a second half performance packed full of character and spirit to push Ulster Rugby all the way in an absorbing Guinness PRO12 encounter at a packed out Kingspan Stadium.
Argentine ace Joaquin Tuculet scored a sensational try in the eighth minute of injury time as Cardiff Blues produced an astonishing finale to snatch victory over Connacht Rugby after an unbelievable Guinness PRO12 encounter.