Achieving genuinely dynamic road user charging: issues with a GNSS-based approach

A variety of approaches to road user charging (RUC) for reducing congestion and raising revenue to maintain and improve transport infrastructure is in place in many countries; examples of such RUC include: an Electronic Fee Collection System in Singapore, Cordon Pricing in Oslo City in Norway, Zoned Based Pricing in London and Distance-Based Pricing (also called Pay-As-You-Drive) in Germany and Switzerland. With the development of satellite technologies, the introduction of dynamic pricing becomes possible, affording an opportunity for RUC to fully reflect the 'Polluter Pays Principle'. This paper provides critical and comparative assessments of existing road user charging (RUC) systems with reference to technological limitations and public and political acceptability. The paper then goes on to demonstrate a system architecture for a Global Navigation Satellite System (GNSS) based dynamic road user charging system capable of considering dynamic variables. Finally we consider the feasibility of the proposed system in relation to technology readiness and public acceptability. We then consider some potential wider benefits from the introduction of a comprehensive system that could be highlighted to justify the cost of development and implementation as well as to improve public and political acceptability. The paper ends with conclusions and future research directions.