>My father has a good one for going around blind corners and going up blind hills at night: Check trees and other objects in the direct path of oncoming traffic for light.

Back in high school, I convinced one of my friends that I had a 6th sense for cars approaching on a long drive back home at night. My trick was that the light from a cars headlights slightly reflects off the semi-gloss black rubber of powerlines and we lived in an area where everything was still on poles. I never noticed this effect on tree leaves but the power/telephone line trick worked really well because a ~6 foot section would be slightly lit, presenting a very large (but thin) target for your eye to see.

Thanks, I was hoping someone would have another good object to check. Where my father mentioned this, there weren't any visible power lines as far as I can recall.

I wonder if something similar happens with the lines on the road, or crops like corn/soybeans, or even tall grasses.

Was just thinking today that 90% of drivers on the road have no concept of blindspots. Maybe understand a blind spot on their own vehicle but the idea of a blind curve (or other blind situation due to any vision obstruction) is completely foreign.