O31 and O27
Once upon a time, many, if not all Class One prototype railroads traditionally employed smaller and lighter rail on sidings, other than mainline passing sidings of course, e.i. industrial spurs, public team tracks, etc., since secondary track didn't require heavy rail standards to safely move heavy freight trains over the road.
In the event there are modelers on the Fourm who use this method would you kindly share your ideas with the rest of the OGR Family. Please feel free to submit photographs of same.