When visiting California from out of state, toll roads come into play. Most often they are the most direct route. But the challenge is knowing when and where you have actually entered and exited them. So when you visit TheTollRoads.com to pay your toll, you need to know the date, time, entry point and exit point for the fare calculation. When you don't know these facts it's impossible to properly fill out the bill. In a rental car, if the data doesn't match up, you'll pay the toll commission AND the rental company will double up (or more) an additional charge on your credit card.