The intersection of East Haven Drive and Cliffside Drive was closed for several hours. so investigators from the force's traffic division could make a detailed examination.
Kayleigh Callaghan-Belanger was killed on March 7, when she was struck by a City of Toronto garbage truck.
The child was crossing the street on her way home from Cliffside Public School, accompanied by her 13-year-old babysitter and two other children.
The investigation will record video of the scene which they were not able to do on the day of the accident because of darkness.
Police say that among other things, they will try to examine the sight lines from the driver's point of view.
The 64-year-old driver of the garbage truck was treated for shock after the accident.
No charges have been laid.