The crash happened near Welshpool in Powys
An elderly couple from Powys were killed when a lorry driver "cut across their path" in his tipper truck, a court has heard.
Kenneth Davies, 79, and his wife Daisy, 77, from Welshpool, were in a Rover car when it was involved in the crash close to the nearby village of Llandrinio.
Hungarian Istvan Kotorman, 48, of Shrewsbury, Shropshire, denies causing deaths by dangerous driving.
Mr Kotorman said he did not see the pensioners' car when he turned right.
Mold Crown Court heard he was wearing sunglasses, and he had gone from an area which was bright and sunny to a cloudy location and his eyes had needed time to adjust.
"I looked if anything was coming. I could not see anything and slowly turned," said Mr Kotorman, a lorry driver for more than 20 years and who had no previous convictions.
The jury was told Mr and Mrs Davies were travelling to visit a relative when their car was involved in the collision on 8 April last year.
Mr Kotorman has admitted two counts of causing death by careless driving but denies two alternative charges of causing death by dangerous driving.
John Wyn Williams, prosecuting, said Mr Kotorman had been driving his tipper lorry used to carry road surface material from a local quarry.
"Tragically their paths met near the village of Llandrinio," he said.
"As they were travelling along the road, the defendant quite simply cut across their path, while trying to manoeuvre into the road leading to Four Crosses.
"As a result of that collision, sadly, Mr and Mrs Davies died of their injuries.
"The prosecution say that when you look at the driving, the prevailing conditions at the time, the lay out of the road, there can be only one conclusion, that the manoeuvre that the defendant took on that fateful morning was indeed dangerous."
The trial jury is expected to retire on Wednesday morning to consider their verdict.