Bosses at Cumbria-based transport group Stobart have expressed sadness at the death of one of their drivers in Northumberland.
The 59-year-old man, from Preston in Lancashire, was pronounced dead at the scene of a crash on the A1 in Belford on Saturday night.
It is understood the man, who has not yet been named, became unwell at the wheel and lost control of the vehicle.
A company spokesman said condolences had been offered to the man's family.
Although the area had sub-zero temperatures at the time, Northumbria Police have not linked the death to the ongoing cold snap.
A force spokesman said the vehicle left the southbound carriageway and ended up in a grass verge on the opposite side.
No other vehicles were involved.
A spokesman for Stobart Group said: "It is with great sadness that Stobart Group learned of the death of one of its drivers at the weekend.
"He had been with the company since the summer and already had established a reputation within the group as an excellent and very professional driver.
"We have been in touch with the family to offer our deepest condolences."
An investigation into the crash is continuing.