Why The US Toll System Is So Complicated
If you're one of the 72% of Americans taking a road trip this year, don't forget your toll passes---plural. There are, after all, over 130 toll systems across 34 states, so you better be prepared. Technically, by now, you should be able to have just one transponder. Congress passed a law in 2012 requiring what's called "interoperability" between all the nation's toll systems - a concept that means one pass would work for every toll. That law was supposed to take effect in 2016.