Pavement Traction Hazards
I was actually thinking about posting this thread before reading about masterlink's unfortunate encounter with a spilled, 5-gallon bucket full of used motor oil. I had a pants-filling moment the other day when I had an encounter with some gravel on a curve. Lots more of it on the roads here now that farming season is in full swing and there's a lot more traffic coming on and off the gravel roads onto pavement.
I was thinking it might be a good idea if we could all throw out an example of conditions/material that can greatly reduce traction while riding on pavement, especially after hearing what happened to masterlink. His encounter was a freak, unavoidable experience, but a lot of hazards lay waiting for us every day and are fairly commonplace.
Maybe some of us will come up with something to look out for that others hadn't thought of. Food for thought, if you will.
I'll start with an obvious one:
Gravel scattered where gravel meets pavement, especially on curves.