The delicate art of tolling: using GNSS to meter vehicles for road-pricing (part 2)

Part 1 of this article reviewed the IPPR policy paper advocating road user charging in the UK and examined the use of global navigation satellite system (GNSS) tracklogs to meter toll road usage. Part 2 examines the limitations of using GNSS tracklogs in determining road tolls and the possibility of using GNSS parklogs as an alternative. Tracklogs record all the paths a vehicle takes during its journeys and parklogs record all the parking events that a vehicle experiences. A parklog is cheaper and more accurate than a tracklog and can be designed to be perceived as less invasive of privacy. Ways of increasing accuracy, minimising operating costs, minimising complexity, enhancing privacy and maximising public acceptance of transport pricing are discussed.