Families bereaved by two Glasgow road death incidents, including the 2014 bin lorry crash, have been told they cannot launch private prosecutions.
Two bereaved households had been trying permission to bring charges against bin lorry driver Harry Clarke.
Mr Clarke was unconscious when the bin lorry veered out of control on 22 December 2014, killing six people.
Judges also ruled against a similar bid from the relatives of two students killed in a accident in 2010.
The Crown Office and Procurator Fiscal Service, which brings prosecutions in Scotland, has hitherto decided not to press charges in either case.
The families of victims then sought granted permission to bring rare private prosecutions against the drivers.