The sun is shining on tens of thousands of visitors as the Royal Norfolk Show gets in to full swing.

The first of the 45,000 visitors expected to attend today poured into the showground from early morning, causing the anticipated congestion and delays to buses around the showground.

Car parks filled up but the roads quietened down once showgoers were in.

Early on the skies were cloudy, but the sun started to appear and temperatures rose to about 20C.

The conditions have enhanced the warm atmosphere at the biggest two-day agricultural show in the country.

Organisers expect 90,000 people to come to the show today and tomorrow to enjoy the blend of food, farming and exciting grand ring entertainment.

Roads policing officers have launched a new Twitter account @NSRoadsPolicing at the show, which will give better updates on the traffic situation.

Visitors to the show can meet roads policing officers on stand 74 (Avenue 4) where they can learn about road safety and see the Lotus driving simulator as well as sign up to Twitter and start following the account.

Chief Inspector Chris Spinks said: “I am looking forward to welcoming visitors to our stand at the Royal Norfolk Show, and launching our new Twitter account across Norfolk and Suffolk. Whilst the main accounts @NorfolkPolice and @SuffolkPolice will continue to give information on road closures and other travel information, the new @NSRoadsPolicing account will give followers an insight into our work and useful information about how to stay safe on the roads.

“Officers will be tweeting as they go about their duties, whether it be attending collisions and other incidents, stopping drivers and other road users or spreading the road safety message at events with our partners. We will also be sharing information that our colleagues in the Think! Norfolk and Suffolk Roadsafe partnerships issue by retweeting their messages.”

There were queues on the A47 westbound between the B1108 junction and Costessey.

There were also delays on the A11 northbound just before the Thickthorn roundabout because of a broken down van.

FirstNorwich warned there would be delays to bus service 23/24 throughout today and tomorrow and tweeted “things already backing up due to #norfolkshow traffic! Please bear with us!”

First’s dedicated bus service 100 operates from Norwich Rail Station and St Stephens Street direct to the showground up to every 10 minutes. Konect will provide a 30-minute service from Norwich Bus Station, St Stephens Street and Earlham Road to the showground, with a similar frequency back, and an hourly service from Dereham.

First is also selling Norfolk Show admission tickets at a discounted rate, which includes bus travel, from 7.30am to 12.30pm from Norwich Rail Station and St Stephens Street