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Description of PD CEN/ISO TS 17444-1:2017 2017This document defines metrics for the charging performance of electronic fee collection (EFC) systems in terms of the level of errors associated with charging computation. This document is a toolbox standard of metrics. The detailed choice of metrics depends on the application and the respective context. This document describes a set of metrics with appropriate definitions, principles and formulations, which together make up a reference framework for the establishment of requirements for EFC systems and their later examination of the charging performance. The charging performance metrics defined in this document are intended for use with any Charging Scheme, regardless of its technical underpinnings, system architecture, tariff structure, geographical coverage, or organizational model. They are defined to treat technical details that can be different among technologies and vendors or vary over time as a “black box”. They focus solely on the outcome of the charging process, i.e. the amount charged in relation to a pre-measured or theoretically correct amount, rather than intermediate variables from various components as sensors, such as positioning accuracy, signal range, or optical resolution. This approach ensures comparable results for each metric in all relevant situations. The metrics are designed to cover the information exchanged on the Front End interface and the interoperability interfaces between Toll Service Providers, Toll Chargers and Road Users as well as on the End-to-End level. Metrics on the following information exchanges are defined:
The details on the rationale of this choice are described in 5.1. The proposed metrics are specifically addressed to protect the interests of the actors in a toll system, such as Toll Service Providers, Toll Chargers and Road Users. The metrics can be used to define requirements (e.g. for requests for proposals) and for performance assessment. This document recognises two types of situations where a performance assessment is necessary:
The following are not covered by this document.
Even though some of these aspects have a direct impact on charging performance, they are not considered explicitly in this document.
About BSIBSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses. |
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