  Certain fractional quantum Hall edges have been predicted to undergo quantum
phase transitions which reduce the number of edge channels and at the same time
bind electrons together. However, detailed studies of experimental signatures
of such a ``binding transition'' remain lacking. Here, we propose quantum
transport signatures with focus on the edge at filling $\nu=9/5$. We
demonstrate theoretically that in the regime of non-equilibrated edge
transport, the bound and unbound edge phases have distinct conductance and
noise characteristics. We also show that for a quantum point contact in the
strong back-scattering regime, the bound phase produces a minimum Fano-factor
$F_{SBS}=3$ corresponding to three-electron tunneling, whereas single electron
tunneling is strongly suppressed at low energies. Together with recent
experimental developments, our results will be useful for detecting binding
transitions in the fractional quantum Hall regime.
