There was a thread about this last summer, some guy in another state was busted using an Opticom and got into serious trouble.
Apparently there are federal laws that prohibit unlawful use of these devices:
http://mutcd.fhwa.dot.gov/HTM/2003r1/part4/part4d.htm#section4D13
Not sure how fed jurisdiction gets involved with state and county roadways, but buying one online is probably a very bad idea.
Edited 1 time(s). Last edit at 04/02/2007 10:20PM by TheMeeper.