Yep, 10 over is generally safe. I heard some cops on radio once saying they set the radar to wake them up or whatever at typically about 12 over. They also said some juridictions around here were tighter and would set for 7-10 over.

I once (about 97 years ago) went 100 on farm roads in central Ill...nice straight roads flat as a table w/ no one around. It was in spring so corn did not yet obstruct view of anyone entering. One or two of my tires was messed up after that. Never gone over about 85 since then.

1996 Contour GL Sport, Zetec, MTX

1995 Contour GL, Zetec, MTX