The existing 60 km/hr speed limit on Richmond Hill Road will be reduced to 50 km/hr in places in mid-October.

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The new speed zone reduction applies to Richmond Hill Road, from the Bruxner Highway to 110 meters north of Laihaina Crescent - a distance of 3.8 kilometres.

Lismore City Council today announced that the speed reduction follows a recent review by Transport NSW, which determines speed zones within the Lismore Local Government Area.

The reduction will come into effect once new speed-zone signage is installed in mid-October.

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