What is the function of the integrated toll module in the Audi A5?

I am looking to purchase an Audi A5, but I am curious about what the integrated toll module does and how it works. Can you provide some insights?

The integrated toll module in the Audi A5 is a feature that allows you to pay tolls automatically without having to stop and use a physical toll tag. It uses a built-in transceiver to communicate with toll gantries and charges the toll amount to your account.