O Scale 2 rail standards have been developed and are maintained by the National Model Railroad Association.  O Scale Central as an organization for O Scale 2 Rail and an NMRA Special Interest Group that is involved and available to work with manufacturers and the NMRA on Standards and other information.  NMRA Standards and extensive technical information are available on the NMRA.org website for all scales.

Edited 3 12 2023 by Eric Peterson