The speed limit will be cut on two road sections in Royal National Park after reports of seasonal entry ticket booths being struck by vehicles.
Roads and Maritime Services (RMS) will extend the existing 60 km/h speed limit on Farnell Avenue for southbound traffic for about 310 metres.
A new 60 km/h speed limit will be installed on Wattamolla Road for about 970 metres from the intersection of Sir Bertram Drive.
New signs are expected to be installed from Thursday, November 16, weather permitting.
A spokeswoman for RMS said a speed zone review was carried out after requests from NSW National Park and Wildlife Services and the local community.
There had been reports seasonal ticket booths along these roads had been struck by vehicles, she said.
“The speed limits were assessed on a number of factors including crash history, road geometry, road environment and traffic volumes,” she said.
The spokeswoman said the new speed limits would reduce the need for motorists to stop abruptly on approach to the seasonal ticket booths.