In addition to the long sweeping curve, the highway at the point of impact, just after the curve, seems to be a slight high point, making it difficult to see on coming traffic at a distance from either direction. See image above.
Better pictures at the link.
Not only were the conditions clear and dry, it looks to be a long, straight, wide open stretch of road.
It happened in a no passing zone. One of the pictures in the Daily Mail link shows a little bit of a hill near the impact site.
Better look again, in the top pic at #60 the road clearly has a long sweeping curve with the apex of the curve almost at the point of impact.
In addition to the long sweeping curve, the highway at the point of impact, just after the curve, seems to be a slight high point, making it difficult to see on coming traffic at a distance from either direction. See image above.
Also at #62 follow the telephone poles that line the highway ahead. They clearly depict and follow the curve in the highway curve just ahead.