Easy with the staying out of Michigan Greg, If everyone does that there will be no one for us to race agiainst at the Mid Michigan points meet in July!
Below is a link to what I was able to find on the Maximum vehicle lengths in Michigan. At the bottom it has a special permit section but it says it is for occasional movement of oversized or weight vehicles.
Sounds like about 75% of the rigs that are at the track are overlength in Michigan.
I have heard by us they have been cracking down on lawn care and similar other businesses using vehicles with trailers over 10,000lbs combined for not having DOT numbers. Another crack down lately is for trailers not having the proper braking, emergency braking, lighting, trailer tires, overloading for the axle rating. Pretty much sounds like our wonderful state trying to stir some more $$$$
http://www.michigan.gov/documents/Loads_dim_87014_7.pdf