CEN/TR 17039:2017

European foreword
1 Scope
2 Members of the different drafting groups for
   the revision of EN 14363
3 Changes to the scope
4 Fault modes
5 Load conditions for testing
6 First stage assessment
7 Statistical analysis and multiple regression
8 Recalculation of Y/Q (7.6.2.2.5)
9 Track loading parameters
10 Rail surface damage quantity T[qst]
11 Replacing of limit values of ride characteristics
   by informative guidance for assessment
12 Track geometric quality and coordination with
   WG 28
13 Contact conditions
14 Special vehicles
15 Simulation
16 Extension of acceptance (Annex U)
17 Topics discussed but postponed for future
   revisions
18 Influence of the revision of EN 14363 on
   current TSI[s]
Annex A (informative) - Guideline for presentation of
        results from multiple regression
Bibliography

EN 14363 contains a lot of requirements which were modified during the last revision. The scope was also extended. It was found in the working group, that many decisions that were taken to formulate these modifications need to be documented to improve understanding and to allow a later further development if practice of applications shows the necessity. The work for the revision was organised in 8 subgroups. Many of these subgroups recorded the way to the proposals in reporting templates, which were used for the editing work. Afterwards discussion was ongoing in WG 10 and in the enquiry process. This available information needs to be summarised and presented in a common format in order to allow people not involved in the discussions to understand the background of the modifications.