TT4e is currently an alliance of six transport and planning advocacy groups, being:
- Inner Melbourne Planning Alliance (IMPA)
- Public Transport Users Association (PTUA)
- Rail Futures Institute (RFI)
- Town and Country Planning Association (TCPA)
- Transport for Melbourne (TfM) and
- The Victorian Transport Action Group (VTAG)
See drop-down menu “About TT4e”.