The mother of a Queensland boy run over and killed when police handcuffed him and forced him to lie on a road is disgusted that no charges will be laid.

Andrew John Bornen, 16, was lying handcuffed and face down on a busy suburban road in the Ipswich suburb of Brassall when he was struck and killed by a car on February 7, 2009.

His heart, aorta and pulmonary trunk were ruptured and he died before an ambulance arrived six minutes later.

Officers had forced the teen down after reports a youth was armed with a machete in the area.

Andrew, however, was only carrying a baseball bat when he was confronted by police, and an inquest found he had not been acting aggressively.

Andrew's mother, Helen Donaldson, said the Director of Public Prosecutions (DPP) had told her today that no charges would be laid over her son's death.

She said the bad news, delivered just before Christmas, had put her "over the cliff".

"I was a bit disgusted myself," Ms Donaldson said.

"I was very upset, very emotional. I'm down anyway, but for them to actually ring me two days before Christmas that is what tops the cake.

"If they would have rang me and said, 'look, they've been charged with manslaughter', then I'd be over the moon, I'd be having an excellent Christmas."

She said the news could have waited.

Ms Donaldson said she took comfort that the inquest had found her son was simply at the wrong place at the wrong time and had not deserved such treatment.

But she said she doubted police had learned anything from the tragedy.

"I at least thought they should have been charged with something," she said.

Director of Public Prosecutions Tony Moynihan says he had carefully considered evidence that would be admissible in any trial.

"There is no suggestion the police officers were acting unlawfully or not in the execution of their duty in arresting Andrew Bornen, who was intoxicated and armed in public," he said in a statement.

"Given the momentary opportunity the police officers had to assess and act in this situation, the efforts made to alert the driver of the vehicle and the contribution of the driver of the vehicle which ran over and killed Mr Bornen, there is no reasonable prospect of a conviction."

The coroner's inquest found the female driver bore no responsibility for the death and that the actions of the two police officers at the centre of the incident should be referred to the DPP to consider whether charges should be laid.

State Coroner Michael Barnes told the inquest in July he could not accept the evidence of then senior constable Anthony Brett and Senior Constable Robert Ward that Andrew, who was drunk, acted aggressively towards them, warranting him being handcuffed on the street.

He said the officers had made a "terrible error of judgment" in leaving the teenager lying there.

Police had stopped their unmarked patrol car on busy Albion Street with the headlights on, obscuring the view of the approaching car that struck Andrew.

Mr Barnes also criticised the officers for not activating emergency lights to warn the approaching driver.

- AAP