Electronic fee collection - Charging
performance - Part 2: Examination Framework
ISO/TS 17444-2:2013 defines the Examination
Framework for the measurement of Charging Performance Metrics defined in ISO/TS
17444-1 to be used during Evaluation and/or on-going Monitoring.
It specifies a method for
the specification and documentation of a Specific Examination Framework which
can be used by the responsible entity to evaluate charging performance for a
particular information exchange interface or for overall charging performance
within a Toll Scheme.
It provides a toolbox of
Examination Tests for the roles of Toll Charger and Toll Service Provider for
the following Scheme types:
The detailed choice of the
set of examination tests to be used depends on the application and the
respective context. Compliance with ISO/TS 17444-2:2013 is understood as using
the definitions and prescriptions laid out in ISO/TS 17444-2:2013 whenever the
respective system aspects are subjected to performance measurements, rather
than using other definitions and examination methods than the ones specified in
Out of scope of ISO/TS
17444-2:2013 are the following aspects:
- ISO/TS 17444-2:2013 does not propose specific
numeric performance bounds, or average or worst-case error bounds in
percentage or monetary units. Those decisions are left to the Toll Charger
(or to agreements between Toll Charger and Service Provider).This Technical
Specification does not consider the evaluation of the expected performance
of a system based on modelling and measured data from trial at another
- ISO/TS 17444-2:2013 does not consider the
specification of a common reference system which would be required for
comparison of performance between systems.
- ISO/TS 17444-2:2013 defines measurements only on
standardised interfaces. Proprietary interfaces are excluded, because it
is not possible to define standardised metrics on such system properties.
These excluded interfaces are among others the link between Toll Charger
RSE and central systems in DSRC systems, and the additional sensor input
of GNSS modules (inertial sensors, CAN-bus for wheel ticks, etc.).