Hello, I'm also going from Spain to Portugal next month. Are there stations for binding credit cards on the expressway entering Portugal ?

I should be, I'm bound for Porto from Salamanca, on the A25 highway.

In my personal opinion, paying in cash is very convenient. Just go through the channel with the Euro sign.

There are four toll expressway entrances, the southernmost A22 from Seville to Faro, the one from Salamanca past A25, A24 and A28 from the north side of La Coruna, I haven't been in, slow down after entering, observe whether there are foreigners' signs on the side, the signs also have the symbol of wifi, generally 500 meters after the sign appears, the operating machine is a device similar to a toll gate, the car stops in front of the pole and it automatically recognizes the license plate, as long as you insert the credit card for a while, it will spit out the receipt and the pole will open, keep the receipt and use the number on it to close the account.

Today, there are two toll points bonded on the toll expressway A25 in Portugal, and there are very few toll points elsewhere. Don't miss it.

Portugal forces collecting tolls on license plate scanning, no choice.