You know, I can find out easily for MD, but I dont know about other states. My brother in law is a MD state inspector and I will fire it by him. Not that he will know about any other states, but he may know about surrounding states.

Also, state can govern differently than county in many instances. Some state laws here allow for certain mods, as where Montgomery County apparently cracks down on many that are allowed. Crap like that can most likely confuse the hell outta most police officers too.

Would be nice to have an online site that offers statewide acceptances list. Of course, that's wishful thinking.