Fastrak

While carpooling dropped 30% on the Bay Bridge after the first-time carpool charges were applied July 1, the Golden Gate Bridge reported a 68% drop, though it may be tied to confusion over which lane carpoolers should use with Fastrak requirement.
Aug 2, 2010   Marin Independent Journal
<p>A "Black Hat security researcher" claims he has discovered security flaws in the FasTrak toll transponder used by drivers in California and Colorado. However, the story is quickly dismantled as "baloney" by a toll road industry insider.</p>
Jul 14, 2008   Toll Roads News