On some low floor trams they are independently rotating such as the Siemens avenio. https://en.m.wikipedia.org/wiki/Siemens_Avenio https://en.m.wikipedia.org/wi

On some low floor trams they are independently rotating such as the Siemens avenio. https://en.m.wikipedia.org/wiki/Siemens_Avenio https://en.m.wikipedia.org/wiki/Siemens_Avenio Technical study https://assets.new.siemens.com/siemens/assets/api/uuid:2dbbe04aeb88674e9b6c332c43d452456b59019e/wheel-sets-independent-en.pdf https://assets.new.siemens.com/siemens/assets/api/uuid:2dbbe...