A Narberth man has gone on trial today accused of killing another motorist by veering across a double white line on the approach to the A40 roundabout near St. Clears.

Peter Pritchard, aged 40, admits causing the death of Gareth Andrew Llewellyn by careless driving but denies the more serious charge.

A jury at Swansea crown court has heard how Pritchard’s Toyota Yaris hit a Renault Clio being driven by Mr. Llewellyn at 8 pm on December 12, 2015.

John Hipkin, prosecuting, said Mr. Llewellyn, aged 51, had been descending towards the roundabout from the direction of Whitland.

He was faced with two lanes in the opposite direction, with a double white line protecting his single lane.

Mr. Hipkin said Pritchard, of Lanes End, Nestor Square, had been driving up the hill and away from the roundabout but in the outside lane when there had not been any need to use it.

Part way up the hill the Yaris verred to the right and into the path of the Clio, causing a head on collision.

Mr. Hipkin said there had been a substantial investigation into the accident and conclusions included Pritchard overlapping the double white line and a ‘slight’ turn of the steering wheel immediately before the impact.

It was also clear that Pritchard should have been able to see the black Clio for 10 to 12 seconds before the accident.

The court heard that although Mr. Llewellyn had been badly injured he was able to speak to motorists who rushed to his help. But he died in hospital.

John Simon Fuller, a farmer from Whitland, said he was driving immediately behind the Clio when he saw the Yaris coming towards them.

“The Clio was being driven normally. The other car veered violently towards my side of the road and collided with the Clio,” he said.

Mr. Fuller said there was so much debris on the road his car became stuck on top of a wheel.

After the collision, Pritchard told police he may have been dazzled by the headlights of the Clio.

But, said Mr Hipkin, they had not been on full beam.

The trial continues.