A Garda said he is "ruthless" in his role because he has told "far too many" families their loved ones have been killed in traffic accidents.
Roads Policing Unit Sergeant Tony Miniter said if motorists could see what he does on a daily basis they would understand what drives him to do his job "as effectively as possible".
He told The Irish Mirror: "The job of letting loved ones know that their son, daughter, mother or father has been killed falls on us.