A driver killed a road worker called out to help at an earlier crash scene.
Norbert Kas lost control of his high-powered BMW and hit Neil Farr and his Amey Highways colleagues on the A82 at the Lomondgate roundabout in Dumbarton, West Dunbartonshire.
Mr Farr ended up trapped under the 46 year-old joiner’s car. The 59 year-old dad-of-two sadly never survived.
Mr Farr’s four workmates from the road maintenance firm were also badly hurt.
First offender Kas today appeared in the dock at the High Court in Glasgow.
He pleaded guilty to a charge of causing death by careless driving.
Kas, of Johnstone, Renfrewshire, had his bail continued and he is due to be sentenced next month.
The tragic incident occurred on May 9 2022.
Earlier that day, a Mercedes driver had lost control of his car at the same roundabout and hit a light column which fell on impact.
Prosecutor Erin Campbell told the court: “It is this earlier collision which lead to Neil Farr and his colleagues attending on behalf of Amey.
“The purpose was to make safe the falling light.”
Mr Farr and his colleague Andrew Taylor arrived first, followed shortly by Paul Jordan, Keith McFadzean and Jamie Hernon.
Kas meantime had been travelling from Glasgow with his partner on way to check out a joinery job.
One motorist was aware of Kas going past him on the A82.
Miss Campbell then explained: “He negotiated the roundabout too fast for the weather conditions.
“As he exited, he accelerated and lost control of the vehicle which began to wobble.
“Kas could not regain control – this resulted in the car sliding, mounting the grass verge at speed and colliding with Mr Farr and his colleagues, who were standing close to one another working on the light column.”
Some of the men were flung onto other parts of the verge. Mr Farr was trapped under the BMW.
Passers-by – including a nurse – stopped to help before mercy crews arrived.
Mr Farr went into cardiac arrest and was described as being in a “critical condition”.
He was freed from beneath the car, but passed away due head and chest injuries.
The much-loved dad is survived by his partner of more than 20 years and his two sons.
Miss Campbell also detailed how the other men were affected by the incident.
Mr Jordan was unable to walk for up to five months following surgery on leg fractures.
Mr Hernon was off work for 10 weeks, and Mr McFadzean for seven, while recovering from their injuries.
Mr Taylor sustained muscle and ligament damage.
The advocate depute added all had been left with “significant psychological distress” from what happened.
Crash investigators meantime found the tread of a tyre on Kas’s car was below the legal limit and could have contributed to the collision.
Defence counsel Allan MacLeod said Kas was “extremely sorry” and that he had also tried “as best he could” to help the injured men that night.
Lord Armstrong adjourned the case for reports until 5th August in Edinburgh.
The judge told Kas: “You now stand convicted of this grave charge in what is a tragic case.”
Kas was disqualified from driving meantime.