see: UTP Marking 2015, Uniform Technical Prescription Applicable to Vehicle Numbers and linked alphabetical marking on the
bodywork: THE RAILWAY VEHICLE MARKING, Applicable from 1.1.2015, retrieved from: OTIF page Prescriptions and Other Rules
To allow the country to join the international seat reservation system, the individual code has been deprecated in favour of the single code for the whole country. The old code may still be used on existing applications [1].