When you pass through a free-flow toll (péage en flux libre) gateway, your number plate is recognised by the free-flow toll system. If you want to drive with a clear head and no longer have to worry about paying for your trips each time you pass, you can subscribe to the "inscription plaque" (plate registration) offer.  On the website www.aliae.com you can register your license plate number and bank details and you will be automatically charged weekly for the trips you make. 

To find out more about the "inscription plaque" (plate registration) offer, go here.