1.1 - The purpose of these international regulations is to define type approval tests for new types of
diesel engines intended for installation in railway motive power units.
1.2 - These regulations apply to diesel traction engines for installation in railway vehicles with the
exception of engines intended for special locomotives (e.g. refinery or mine locomotives) as well as
traction engines with an effective output of less than 100 kW.
1.3- These regulations may be applied by the railways for their own use if they wish to obtain a
comprehensive guarantee of service reliability for any particular type of diesel traction engine.
UIC OR 623-2-2008 history
2010UIC OR 623-2-2010 Approval tests for diesel engines of motive power units
2008UIC OR 623-2-2008 Approval tests for diesel engines of motive power units
2006UIC OR 623-2-2006 Approval tests for diesel engines of motive power units