How to pay toll?
Though no toll roads exist in Hawaii, depending on your route, you might have to pay toll while traveling to other states. You cannot pay tolls by cash or coins on all toll roads in USA. To save time on people having to stop to pay cash, many toll road gantries have electronic tag readers. Please check out Tollguru state webpages to learn about toll payment methods. It may be worthwhile to buy a relevant Tag. Here is list of tags for each state.