scope:

The scope of this European standard is restricted to the measurement of the quasi static or mean
wheel and axle loads and the evaluation of the difference in static load between each side of the
same vehicle, bogie and wheelset. Other derived quantities covered by the standard are:
. average axle load of a trainset;
. vehicle mass;
. total train mass.
The standard is not concerned with the evaluation of dynamic axle or dynamic wheel loads and with
the evaluation of wheel condition (i.e. shape, profile, flats).
The standard permits the measurements to be made at any speed within the calibrated range, which
may be up to line speed.
The aim of this standard is to obtain measurement results that give the best possible representative
values for the load distribution of a running vehicle, which under ideal conditions will be similar to what
can be obtained from a standing vehicle.
In order to ensure compatibility with EN 14363:2005, which also considers "axle load" as the (varying)
sum of the wheel forces, this standard will refer to these as "quasi-static" quantities.
This standard does not impose any restrictions on the types of vehicles that can be monitored, or on
which networks or lines the measuring system can be installed.
The standard lays down minimum technical requirements and the metrological characteristics of a
system for measuring and evaluating a range of vehicle loading parameters. Also defined are
accuracy classes for the parameters measured and the procedure for verifying the calibration.
The standard contains normative and informative annexes. Annexes denominated as normative are to
be considered as integral parts of the standard and the informative annexes are provided for guidance only.
It should be noted that the measuring system proposed in this standard shall not be considered as
being safety critical. If the measuring system is connected to track signalling, a train monitoring or a
train control system then requirements that are not part of this standard may apply.
Measuring systems complying with this standard have the potential to enhance rail safety. However,
the current operating and maintenance procedures rather than this standard, are mandatory for
ensuring safety levels in European rail networks.