Speed limits on Heath Road and Ingleburn Road, Leppington are about to change.
Transport for NSW's have recommended changes to the speed zones on the two Leppington roads after a review.
Camden MP Peter Sidgreaves said the speed zone review was carried out in response to community concerns about speed limits in the area.
"Following the review, Transport for NSW will introduce a 70 km/h zone along Ingleburn Road and Heath Road, Leppington in both directions between Eastwood Road and Camden Valley Way," Mr Sidgreaves said.
"The new speed limit is expected to bring significant road safety benefits to the residents and road users due to the increased development in the area.
"Motorists are reminded to drive to sign posted speed limits at all times for the safety of all road users."
The changes to the speed limit will come into effect when new speed limit signs are installed from Friday, July 17, weather permitting.