Consistent usage of SI units and documentation of execeptions (de: Einheitliche Verwendung von SI-Einheiten und Dokumentation der Ausnahmen)
railML.org committed to use SI units as Golden Rule, as long they will not speak against the common usage principles (state of the art) in the railway sector.
Therefore the consistent usage of SI units and a documentation of the agreed exceptions (e.g. usage of kilometers per hour (kph or km/h) for speeds) shall be crosschecked before the publishing of railML 3.2.
The existing tickets like #56 (closed) have to be considered in the decisions too.
When documenting please consider the relating page about Common Data Types in the railML wiki too.