Night speed restrictions on Medowie Road Williamtown, Salt Ash by News Of The Area - Modern Media - July 12, 2016 Location of the traffic control and reduced speed limits area. THE Department of Defence have advised that traffic control and reduced speed limits will be in place on Medowie Road between the RAAF Base North Gate and the roundabout at the intersection of Medowie Road and Richardson Road, Williamtown. The scheduled time for this is from Monday to Friday, 11-15 July (weather permitting). The temporary traffic controls and reduced speed limits will be in place between 7:00pm and 5:00am and will facilitate safer traffic flow for commuters along Medowie Road. The Department of Defence appreciates the support it receives from the Port Stephens community during the Base Upgrade period. Further information regarding the road works can be obtained by calling 1300 DEFENCE (1300 333 362) and asking to be connected to RAAF Williamtown.