german: Normen Europäischer Modellbahnen (french: Normes Européennes de Modélisme ferroviaires, literally European Standards for Model Railways, known in the UK as Normal European Modelling Standards (NEM Standards)) are standards for
model railroads, issued by the
MOROP.
Standards
The NEM standards are defined and maintained by the Technical Commission of the MOROP in collaboration with model railroad manufacturers.
The NEM standards define the
model railroad scales and guide
manufacturers
Manufacturing is the creation or production of goods with the help of equipment, labor, machines, tools, and chemical or biological processing or formulation. It is the essence of secondary sector of the economy. The term may refer to ...
in creating compatible products and assist modellers in constructing
model railroad layout
In model railroading, a ''layout'' is a diorama containing scale track for operating trains. The size of a layout varies, from small shelf-top designs to ones that fill entire rooms, basements, or whole buildings.
Attention to modeling details s ...
s that operate reliably. The standards cover areas like suggested
grades,
turnout radii, wheel profiles, coupling designs and
Digital Command Control
Digital Command Control (DCC) is a standard for a system to operate model railways digitally. When equipped with Digital Command Control, locomotives on the same electrical section of track can be independently controlled.
The DCC protocol is de ...
(DCC) and are mostly scale specific. A fundamental principle in NEM standards are compromises in the exact scale reduction ratio in order to favour operational reliability of model railroad systems. An example for this is
wheel flanges which tend to be proportionally wider in smaller scales to ensure reliable operation.
The NEM standards cover areas similar to the standards and recommended practices defined by the
National Model Railroad Association (NMRA) in the
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...
, but the two standards are not universally interchangeable. In recent years, MOROP and NMRA have been working more closely together to establish common standards for developments such as DCC. European model railroad manufacturers generally follow the NEM standards, while North American manufacturers generally follow NMRA standards.
See also
*
List of rail transport modelling scale standards
This page lists the most relevant model railway scale standards in the world. Most standards are regional, but some have followers in other parts of the world outside their native region, most notably NEM and NMRA. While the most significant stan ...
*
Rail transport modelling scales
References
General
* Most of this page's content was taken from th
NEM article in DCCWiki
External links
*NEM standards on MOROP website
(outdated)
an
MOROP websiteNEM article in DCC Wiki
{{DEFAULTSORT:Normen Europaischer Modellbahnen
Rail transport modelling
Rail transport modelling standards
Standards of Germany