Defence lawyers spent Thursday trying to poke holes in a Barrie police officer’s testimony on how fast one of the accused was driving in a fatal 2014 crash.
Const. Chris Allport, a collision reconstruction specialist, testified on Wednesday that the BMW that struck Theresa Van Wieren-Wisch’s Toyota on Mapleview Drive was going 107 km/h.
Van Wieren-Wisch was killed in the crash and her son was injured.
Allport calculated the speed by reviewing surveillance videos and crash evidence. However, the defence argued on Thursday, the surveillance video he used doesn't show the whole story.
Allport admitted the angle of the video made it difficult to determine the exact location of the BMW. He said he couldn't tell what lane it was in.
“There are a lot of limitations and challenges to the video itself,” Allport said.
The defence replied, “If the distance is off, could the calculation of the speed be off?”
Allport said the surveillance video was just part of his calculations. He said that he is still confident with his conclusions.
The Crown alleges that the driver of the BMW was being driven by one of two teenagers who were street racing.
There will be no more evidence presented by the Crown, but the defence is expected to call one more witness to the stand on Friday.
