I always set my cruise at 6 or 7 MPH over the posted speed limit. Usually safe at that amount over.
I've heard a cop or 2 claim they usually go by "8 you're great, 9 you're mine"...
So I stick around 7 over usually.
If Im with a group, however fast they go.
Between ames and dm 80 ( there really is no place for an officer to turn around, just slow down at on ramps)
between ames and hwy 20 75
I80 to IC typically 75-78 but its easy to find a pack and jump in and go 80
I235 between Ankeny/WdM 5-8 over never more than 10 bc of cameras
Always within 5 mph over in commercial vehicles for work.
Arrrgh! I hate this. If I pass you, I'm not giving you a signal to speed up and hang on my *** like a dingleberry. It drives me nuts when I pass a couple people and they immediately see it as time to start a convoy. Not only does it stick out like sore thumb to cops, I'm not getting paid to be your tour guide of the highway.
If it's Christmas day 2013 and an inch or two of snow has fallen on Highway 20 between Waterloo and Dubuque, 35-55 mph. Thanks Iowa Department of Transportation!
This is actually quite common. I do a lot of work in the Quad Cities and I commute from Des Moines and it is not uncommon to see people go 80-85 on that stretch on I-80. Most of the time they have Illinois plates. Traffic tends to slow down between the speed traps that are usually set-up: just East of Bondurant and the last rest area before you hit I-380.I don't understand the guy that said he goes 10 over on 80 between IC and Des Moines.