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Are you planning a multi-state road trip or just want to know what to expect? Most toll roads now use electronic systems like E-ZPass in the Northeast or FasTrak in California, so if you have a transponder from your home state, it'll work in many neighboring states too. If you don't have one, you can usually pay cash at toll booths or use a rental car's pre-loaded toll account. Before you leave, check which states you're driving through on a trip planning site to see if they have tolls, and consider getting a universal transponder if you travel frequently - it'll save you money through discounts that cash payment doesn't offer.
Get a transponder before you leave if you're hitting multiple states - most systems won't talk to each other, so you'll need separate ones for different regions (E-ZPass covers a bunch of northeastern states, but California's FasTrak is its own thing). Cash is becoming rare on toll roads, so check which highways actually accept it or you could end up in a jam.
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