Evidence against an alleged drug-affected driver charged over a double fatality at Mount Richmond on Christmas Eve will be tested during a hearing later this year.
David Frost, 51, of Tyrendarra, appeared in Warrnambool Magistrates Court where a one-day committal hearing was set down for September 30.
It will hear from three witnesses, including a traffic collision reconstructionist and medical practitioner.
Police allege Mr Frost was driving west on the Portland-Nelson Road in a Jeep Cherokee at 10.21am on Christmas Eve last year when he travelled onto the wrong side of the road, colliding head on with a Holden Trax travelling east.
It is alleged methamphetamine and amphetamine was found in Mr Frost's blood in the hours after the horror crash that claimed the lives of Megan Grayling, 43, and her 16-year-old daughter Erynn.
On Friday, lawyer Nick Papas told the court the committal hearing was "not about avoiding responsibility" but testing the evidence in relation to the charge of culpable driving.
Mr Frost was refused bail in late March and is expected to make a second bid to be released from custody on August 2.
He was remanded in custody and will appear in court again on that day.
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