I like that they have all of their tolls listed in one place, so it's easy to see what you need for your trip! It also has my favorite feature called "Toll Zone" which shows me where each zone is located along with how much cash will be required at this location (if applicable).
There are some things about Tolls & Travel Networking Incorporated LLC/The GTSI website interface or user experience as well - there needs more detail provided when searching by state rather than just city names etc.. For example if i search NY State then sometimes an incorrect list comes up because no other states include New York City within them? This can lead users down wrong paths looking through different options until finally finding out its not available here either!! Some cities such us Boston Massachusettts area do NOT show any availability even though we know these locations exist. So far everything.