Standard international coding

Most European Rail Networks, including Italy's FS, have adopted a common international coding for their wagons. Under the system, the various types of vehicles are marked by a letter (code letter) and a sequence of digits (digit code).
 
The code letter system has been designed in such a way that each special category of wagon (covered, high-side, flat bed, etc.) corresponds to a capital letter, called class or series code letter. In addition to the code letter for a given class, the markings also include some characteristic letters or indices, written in lower case, which indicate the presence or absence of some requirements that are usually applicable to the wagons of that class.


The number coding comprises four elements according to the following groups of codes and digits:

This indicates the points system of the wagon on international service and whether or not it is suitable for running on railways with a different gauge;
This shows the owner network or, in the case of private wagons, the network of registration;

This indicates the actual service number:
- with the first four digits, the class the wagon belongs to (every class encompasses wagons with similar usage characteristics);
- with the other three digits, the numerical progression within each class;

This is an automatic control digit code, which enables mechanographic machines to perform an automatic check of digit codes to establish their exactness.

As a result of all this, thanks to the standard coding system, it is easy to identify the main characteristics of usage of each vehicle, as well as the gauge profile and the owner network or that of registration. As far as the code letters are concerned, the standard coding is only compulsory for railways in Italy, France, Belgium, Holland, Luxembourg, Denmark, Germany, Switzerland and Austria, whereas digit coding is compulsory for all European railways.


Key wagon symbols

Symbol for wagons that comply with the norms of construction and gauge profile on international traffic. For private wagons alone, the presence of an asterisk indicates that, following special agreements, some commercial restrictions apply.

Symbol for wagons which do not comply with RIV's construction regulations, but are admitted on the lines of the Networks indicated on the mark. For private wagons alone, the presence of an asterisk indicates that some commercial restrictions, following special agreements, apply.
     
Symbol relating to the tare weight of wagons.
Symbol for the capacity of tank wagons.
     
Symbol for the surface of the wagon floor.
Symbol for the useful loading length.
     
Symbol for the wagon length, including bumpers.
Symbol for the minimum curve radius.
     
Symbol for wagons whose bogies can only transit on mobile bridges with an inclination angle of less than 3° 30'.
Supplementary symbol for wagons admitted for circulation on British Railways lines.
     
Symbol which identifies private wagons or those hired privately.
Symbol for wagons complying with standard international regulations ("unified wagons").
     
Symbol for standard unified wagons, built to ORE's design.
   
N.B. The markings relating to loading limits and concentrated wagons are illustrated separately


 

 
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