All speed enforcement is illgitimate and desigined to empower and enrich government, lawyers, lowlevel hypocrite government employees, and insurance companies. When the federal government changed the NMSL from 55 to 65, traffic mortality and morbidity went down, when it got out the way totally and returned power to the state it went down, again, without exception in every state that raised the SL. The MUTCD proves that an SL set by science, as the 85th %ile with lax enforcement is the safest. The fastest roads (the rural interstates) carry the most traffic at the highest speeds, but are by far the safest. Advocates of underposted SLs are either fools or involved in the random tax hypocracy. Herdfan, you are describing a variation on the old "speedometer repair" scam. It used to be that the random taxers would let you get a mechanic say you had a "equipment malfunction" with a receipt from a speedometer repair shop presented through a local lawyer. Herdfan, the following is technical content and only applies if you are a WV resident, which I gather from your name (Herd being a reference to the Marshall Thundering Herd). It will work, although you might have to ask for a DMV hearing (which you will win and will cost you nothing) to do so. WV has 2 laws that are operative here. WV interstate SL is 70, unless lowered by a traffic study conduced by a professional engineer. Well, when the federal government finally allowed states to raise the SL to 65 (and, as I mentioned, save lives, and divert prescious police resouces to inportant things like murder, rape and theft) WV wisely did so on day one. Maryland continued to random tax motorists for many years. Well, that meant many people from WV's eastern panhandle had to travel the cop infested I-68 to get to the rest of the state, including legislators. So they passed a law, still on the books, that says that the DMV will take not notice of any ticket that it would not take notice of if it were a WV ticket. Since WV takes no notice of a ticket that is 9 over the SL and the SL on that section if it were in WV would be 70, 77 would be 7 over and thus the ticket would be a no points ticket in WV. Simply ask for a driving record from WV DMV, and if the ticket shows up, ask for a hearing. They will back off, and if they don't you will outsmart the drone (non-lawyer) hearing officer.