Kieran Paul Murray was found injured on the side of the A807 Balmore Road on 7 October 2020.
He was found about 500m east of the Allander Toll Roundabout at about 9.50pm. He was then taken to the Queen Elizabeth University Hospital and then transferred to the Glasgow Royal Infirmary where he was treated for head injuries, but he later died on the morning of Friday 9 October 2020.
It was thought that he had been struck by a car.
The police later released the images of three vehicles that they were interested in tracing.
Grey or silver coloured Range Rover or Land Rover Discovery. Seen driving around 9.40pm from Kirkintilloch, through the Torrance Roundabout and then along Balmore Road.
Grey or silver Ford Fiesta. Seen driving around 9.40pm along Balmore Road down to the Allander Roundabout and then past the Dobbies garden centre on Boclair Road before turning right at the traffic lights at Milngavie Road and driving off towards Milngavie.
White Peugeot Partner van with business livery on the sides and back. Seen driving along Boclair Road and past Dobbies garden centre, to the traffic lights at Milngavie Road before turning right at the lights and driving off towards Milngavie.
However, nothing more is known.