Since Insider has been on the subject of states trying to create revenue from advertising on interstates and highways, if you ever wanted some background on advertising cost and eligibility of the Blue Exit signs along you nearby major interstate, David Tracy writes an article on the subject this week at Jalopnik.com. 

You can go to his article for more detail, but here is a schedule of eligibility from the state of Michigan.

As to cost, of course you have to look at each state, but here is a schedule from the State of Washington.

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