Not if you're in a municipality that derives a significant part of its revenue from traffic tickets. Ten mph over will often get you a ticket, but seven seems to be safe.
There was a little town here that everyone knew would nail you for five over. I don't know if they still do but I never test it.
I drove up the Valley last year, and there was a long line of cars (maybe 50) going 70 mph in both lanes. This went on for over 100 miles. I finally managed to work my way up to the slowpoke and saw that it was a white law-enforcement car with spotlights driving at 70 in the fast lane. I edged up to the side of the car and I could see that it had an insignia on the door, but as I got right up beside it I saw that it was a Fish and Game car. So I waved and hauled ass on by at 80. In the rear view I saw a stream of cars following me. Although I was disgusted that it took so long to get past him, I thought it was funny when the flood gates opened.
I've overtaken an actual state highway patrol who was doing the posted limit, with me doing five over, when everyone else was afraid to pass. But that was when I was young and full of P&V. Not sure I would have the nads to do it now.
I hate it when the small town cops fly by you at 25+ over the limit and you know they're 20 miles out of their jurisdiction so it's not an emergency.
