The groove is too wide now, I didn't take a photograph, but on the other
rail the back of the groove is ground out to match.

The standard European profile used has what looks to be a wider groove
than Melbourne uses. Certainly MUCH larger than the 'traditional' Sydney
track used in the 'old days'.

On 19/3/24 19:51,transitconsult@... wrote:
> I   recall that one argument for the use of grooved rail was that on

> curves the opposite wheel to that creating the wear shown would bear

> against the groove lip and prevent the 'grinding' wheel flange cutting

> into the running rail.  The wear shown indicates that the lip of the

> other rail did not function in this way. Gauge incorrect or the groove

> too wide?