flyingron, I believe I stated that some states adopt it verbatim, while others add on to it. If a state adds on to it or doesn't have one at all, it still has to conform to the MUTCD. Just like the Constitution is a federal document and it overrides any conflicting law a state might try to enforce. The Federal MUTCD will override any law concerning traffic control devices that conflict with it. Thats why I say it applies to all 50 states. If you know of any state law that defies the Federal MUTCD, please share. That would be some very interesting information!
jk, its easy to point out the shoulda's after a trial is over. Going into the trial, there were two likely possibilities...prove the legal speed limit, which runs the very likely risk of getting the charge amended and therefore convicted. Then I would probably appeal on fruit of the poisonous tree doctrine.
The other choice being what would happen if I don't prove the speed limit. With that I would also be appealing on different grounds.
So, it seems one needs to choose their poison. I'm sure different opinions will choose either one for good reasons.
Ultimately, thanks for the different perspective, it was helpful. Its been 12 years since I had to go to traffic court, and a California one at that! This trial did provide me with some good experience and hopefully I won't need to use it. Wish me luck on the appeal!