most LEOs generally won't cite for speeding for readings at or under 5 MPH over the posted limit because it's not worth the costs involved for issuing the citation. Therefore, it's generally OK to speed by 8-9 MPH at highway speeds.
Always took an extra 9 or 10 highway mph during my first 45 years behind the wheel...and never received a citation (for that doing 10 or less).
Then, I got pulled over and ticketed in a very rural location...on my bicycle in Kendall County for “running“ a stop sign...at an LEO claimed 2 mph.
I waived as I passed the stationary LEO ~100 yards prior to my “transgression” and knew he was following very close behind. I even slowed and signaled for him to pass ~75’ before the stop sign.
I’m a very seasoned rider that can safely clip-out and track stand (road/mtb) for several seconds pretty much anywhere. Once the LEO failed to pass, I signaled and executed a left turn, then went up an extremely bumpy 15 degree gradient next to the stop sign.
The squad car was so close behind (per helmet mirror) that iI feared it would have run over me, had I fumbled foot placement on the bumpy incline. So, I slowed and brought the bicycle to what I thought was a complete, albeit very brief stop...wheels stopped, but body still moving forward, then released brakes and proceeded through the intersection.
Sargent Stadanko (Officer Daily) flips on the lights, hits the siren, and shouts over the megaphone “you on the bike...pull over....NOW!”
I did, but seriously thought he was kidding. Clipped out and dismounted in a safe spot...on an I-10 overpass. LEO asks why I “ran the stop sign.” He effectively said my explanation was bogus and asked for my DL. I said he could see my health insurance card, but I don’t carry a DL on the bike.
The LEO snidely stated that was another violation of the law. I knew that was a load of crap and called him on it...well, that’s when everything went sideways.
At that point I had been riding 4.5 hours, it’s literally 104°, my water bottles are empty, and the LEO says “wait here while I run your information.” 20 minutes goes by before I start waiving my arms hoping he will exit his air conditioned squad car and release me.
Five minutes later a Texas state trooper boxes me in...seriously, it was like something out of Alice’s Restaurant. 10 more baking minutes passed, the citation was issued, and I was on my merry way.
Long story short ? the citation had open check boxes for a variety of other high crimes and misdemeanors, including speeding. The old speeding options began with “10 mph” over the posted limit. The first speeding related check box on this citation was for 10% over.
The moral of the story...in a 30 mph zone, 33 mph warrants a citation, etc. Not sure most LEOs would issue one. Just don’t run into Sargent Stadanko having a bad day.