No problem, I just use the 30kph lane. No stopping.Pay cash! at each booth stop remove seat belt, find money, go long way round kicking tyres as you go, have discussion with wife as to the cost, wait for the wrong rate to appear and shout Campingcar into the mike, find new cost and fiddle in purse for money, insert cash, and demand receipt, walk back to drivers side kicking tyres again, get in put on seat belt, adjust belt and settle in, replace money in safe then move off taking all necessary precautions.
During this time you will be regaled by happy French drivers who will deeply appreciate the care you are taking and they will serenade you with their wonderful singing voices and car horns