A Manitoba semi driver has pled guilty to three charges of dangerous driving causing death and one charge of dangerous driving causing bodily harm.

Normand Lavoie was behind the wheel of the semi that slammed into a stopped vehicle at a construction site. The crash killed three teens from Carrot River who were returning home from a football camp in spring 2015.

The semi hit with such force, it pushed their car into another vehicle and then into a flag person.