Traffic is very heavy. It has since been reopened. Use the Great Western Highway instead. Motorists are advised to use the Great Western Highway. 'And that is what is our primary concern.
Traffic is heavy subcommittee of the flooding.
( z0 subcommittee :domain ( z1 traffic ) :mod ( z2 heavy ) :subevent-of ( z3 flood ) )
(z0 / subcommittee
    :domain (z1 / traffic)
    :mod (z2 / heavy)
    :subevent-of (z3 / flood-01))
Traffic is heavy subcommittee of the flooding .
z0 :mod z2
z0 :domain z1
z0 :subevent-of z3