IEC 62279 （2002-08）

1)The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, the IEC publishes International Standards. Their preparation is
entrusted to technical committees; any IEC National Committee interested in the subject dealt with may
participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. The IEC collaborates closely with the International Organization
for Standardization (ISO) in accordance with conditions determined by agreement between the two
organizations.
2)The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an
international consensus of opinion on the relevant subjects since each technical committee has representation
from all interested National Committees.
3)The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4)  In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5)  The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6)  Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62279 has been prepared by IEC technical committee 9: Electric
railway equipment.
This standard, based on the European Norm EN 50128 (2001), was prepared by subcommittee
9XA, Communication, signalling and processing systems, of Technical Committee CENELEC
TC 9X, Electrical and electronic applications for railways. It was submitted to the National
Committees for voting under the Fast Track Procedure as the following documents:
FDISReport on voting
9/XX/FDIS9/XX/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This standard shall be read in conjunction with IEC 62278 and ENV 50129:1998.
This standard does not follow the rules for structuring International Standards as given in4586