1 second for every 10 feet of rig + 1 more second over 40 MPH. I know the additional second doesn't seem like much, but 65 Miles per Hour = 95.333 Feet per Second - potentially more than enough additional space to recognize the hazard.
Most tickets are "beaten" by the officer doing a no-show for the trial date. Lawyers will usually ask for a continuance if he shows for the first one, hoping he no-shows for the second one. Troopers on Traffics Patrol's job description is: write tickets & go to court.
These "mover over" laws were enacted because too many cops were getting KILLED during traffic stops. Hence cops are REAL KEEN in seeing this law ENFORCED (really can't blame them there). You can't have it BOTH WAYS - truckers complain about different speeds for cars and trucks being unsafe, then you're trying to blame the increased speed for trucks, on what truly just amounts to YOUR BAD LUCK.
Expert witness or not, the biggest issue is getting the cop to testify as to just HOW he know you hadn't slowed down below whatever the statute specifies and
Ohio's law IS rather AMBIGUOUS on this point. A truck moving where "the driver shall proceed with due caution, reduce the speed of the motor vehicle, and maintain a safe speed for the road, weather, and traffic conditions" will rock a car on the shoulder whether they're doing 65, 55 or 45.
A "good lawyer" can argue this ambiguity - but a small town judge will usually side with the cop. CDL drivers can't get "no points/driving school" - we either BEAT IT OR EAT IT. Keep in mind you also need to report this to your EMPLOYER...
Rick