there is a need to indicate generically the number of heavy vehicles (as well as light vehicles) within an accident in real time..
for this purpose the reusable class GroupsOfVehicleInvolved can be used with a specific VehicleCharacteristcs with VehicleType set as "heavyVehicle" that was in the past 1.0 version of the Datex2 model.
heavy vehicle is a category that includes all vehicles that are not light vehicles ( whose number is possible to manage using carOrLightVehicle as vehicleType )
The request is clearly phrased and will be considered by the DATEX committees. Since the requested addition of literal "heavyVehicle" to enumeration "VehicleTypeEnum" is not backwrads compatible, it cannot be included before the release of v3.0.
Implement resolution documented by Bard, which was to add heavyVehicle to VehicleTypeEnum