'Keep it simple, stupid' is an oft-forgotten axiom but in terms of road user charging it is entirely appropriate. So says the ANWB's Ferry Smith. A couple of decades ago, it might have been largely true that the technology aspects of advanced road infrastructure were the main obstacles to deployment. However, 20 years or more of development have led to a situation where such 'obstacles' are often no more than a political fig-leaf. Area-wide Road User Charging (RUC) is a case in point; speak candidly to syst