Sanef Tolling

Has anyone used Sanef Tolling in France, I would like to hear your views as last year most of the Peage's were Automatic and Mrs Admiral had to get out of the car as I could not get near the ticket machine, I had a load of grief as the wind blew her hair in all directions, she was not a happy bunny. This Sanef Tolling on paper seems to be the right way to go, any thoughts/experiences ?

Admiral