The State Gestapo around here had to practice aiming and firing the laser scoped speed guns to "qualify", just like with the sidearm. Used an old license plate as the target. I took the hint and removed all the shinies from the front that I could. Even the "BAMA" tag. Bear would have understood...

Brian, I hear really talented cops could whistle into the radio mike and make the radar speed gun read what they wanted it to. Something about "calibrate" mode stuff...

paint your truck in IR absorbing paint. Milsurplus helicopter paint would do nicely..

Enlist a "rabbit" who you entice to run faster than you by pissing him off so every time you speed up, he does, too, and you fall in behind with the cop bait out front and obvious. Young ricers work well for this for higher speeds. Old yankee farts do better at intermediate speeds. Look for a shiny red old yankee fart. The high blood pressure makes it work better, as does a wife who waves her hands while she harangues him from the admiral's seat...

Don't go faster than the fastest trucks. This can easily yield an 80mph cruise, and is entertaining if you like near misses and truck lane weave from the fast big'un.

Yellow light time used to be state mandated at 4sec. Shortened to three a few years ago. Stated purpose: speed traffic flow. Real purpose: revenue gen.