One exception being the Interstate Highway System, of course. At any rate, FRetards will not be de turd by de facts.
(Note to all readers: Not all FReepers are FRetards, only the FRetarded ones. If you're offended by the label, you just might be one. ;O)
Not true. In some places, where there's no other option, bikes are allowed to ride on the shoulder of an interstate. Since 9-11, when they closed down the bike route through Camp Pendleton, you have to ride on the shoulder of I-5 to get from San Clemente to Oceanside.