Plenty of toll roads recognize number plates in Europe, but it may well be that it's easier to implement this system when there are typically only two or three

Plenty of toll roads recognize number plates in Europe, but it may well be that it's easier to implement this system when there are typically only two or three plate designs per country, and they're generally all pretty much the same — black letters on a white or yellow background. https://en.wikipedia.org/wiki/European_vehicle_registration_plate#List https://en.wikipedia.org/wiki/European_vehicle_registration_...