What does the circled 1 sign mean on Google maps next to "Tolls"?

Question

What does the circled 1 sign mean on Google maps next to "Tolls"?

Example:

I don't think that's the number of tolls given the distance.

Answer 1

As correctly stated by @MichaelSeifert, it is a graphic representation of coins.

A circle alone wouldn't be easily interpreted as currency. I speculate that using the dollar symbol would be biasing in an international context, so using a digit is the most intuitive way to display that the circle has value.

Historically, on US tollways you often used a single coin to pay the toll. Modern tollways are either more expensive or simply electronic (e.g., in Israel you don't have a single toll booth, and I found the same "1 coin" icon as I expected on my way from Tel Aviv to Haifa).