On a well designed track the flanges should not ever rub. Of course with light rail you'll sometimes run into a problem where a curve needs to be tighter than c

On a well designed track the flanges should not ever rub. Of course with light rail you'll sometimes run into a problem where a curve needs to be tighter than can be done without flange rubbing. The Amsterdam tramways have a couple places like that and the noise is godawful.