The family of a Sussex man who died following an accident on the A20 in Kent have renewed their plea for information at the fatal crash site.
Michael Baker, 47, from Littlehampton, died after the crash near the Swanley interchange in July.
His partner Sheila Bright joined police in making a fresh appeal for witnesses.
Four children, aged 10 to 15, were questioned on suspicion of manslaughter after reports of stones being thrown from the side of the road.
Earlier this month, Kent Police said they would not face prosecution.
Making a fresh appeal for witnesses, Det Insp Ian Rogerson said it was very much a "live investigation".
Mr Baker had been a passenger in a recovery truck which hit a lorry.
He suffered serious injuries when the truck hit the stationary lorry and died later in hospital.