After section 37(3) of the Principal Act insert —
"(4) The Secretary must not serve a land management notice on a municipal council if—
(a) the land management notice contains requirements to eradicate or prevent the spread of regionally prohibited weeds, regionally controlled weeds or established pest animals on the roadside of any municipal road in that municipal district; and
(b) there is an approved roadside weed and pest animal management plan operating in respect of the municipal district.".