yesterday's fatal crash site

On my bike, I went by the site of a tragedy that occurred yesterday afternoon. A 20-year-old woman was crushed in her car yesterday afternoon. A dump truck collided with her vehicle, overturned dumping its load and crushing the car. I wonder how fast that truck could have been going as it made the turn from Manitou Road onto Big Ridge Road (presumably a left turn) in front of the oncoming southbound car.