The Friendship of European railway modellers is a modular rail transport modelling standard. Individual track and scenery modules are built to a common standard and are joined together to make larger model railway layouts.
The FREMO standards were created following a meeting in Europe in 1981.
North American standards
In 1994 Chris Palomarez and Art Armstrong at the San Luis Obispo Model Railroad Club (SLOMRC) developed the Free-mo Standard based on the European FREMO concept. == N-scale variant ==
N-scale variant
In 2004, the traditional Free-mo standard was adapted for N scale (1:160). It uses Code 55 rail at a nominal height of . Curves should not have a radius of less than on the main line and use turnouts sized 6 or larger. == NMRA British Region Freemo standard ==
NMRA British Region Freemo standard
In 2011 the NMRA British Region released a set of standards called Freemo, Recommended Specifications For HO Scale Modules. == Australian Model Railway Association standard ==
Australian Model Railway Association standard
The Australian Model Railway Association has a set of standards based on FREMO called the "AMRA Free Form Module Standard." Version 2.4 of the standard was published in July 2024. , there are standards for HO and N Scales, with an O Scale version under development in collaboration with the Aus7 O Scale Modeller's Group. The AMRA standard is similar to the FREMO standard, but uses a slightly lower rail height of 1,200 mm and uses M6 wing bolts. ==See also==