The road where this happened is used by many trucks on work-days. Could have been diesel on the road, or oil, orr resin, or just my lack of experience. I had a car crash 11 years ago which involved tree resin. But looking back to that one, I had time to react, even though I was a new driver at the time. With this one, as soon as I knew something was wrong, I was already on the ground, it was really fast.