Speed limits will be changed on two dangerous sections of the Great Western Highway, east of Lithgow.
Bathurst MP Paul Toole said NSW Roads and Maritime Service assessed the highway as part of the Top 100 audit of speed zones.
As a result, a 90km/h speed limit from 2.8km west of Mount York Road (Mount Victoria) to 200 metres west of Jenolan Caves Road (Hartley) will be reduced to 80km/h.
Near Lithgow, the 90km/h speed limit from 1.7km west of Jenolan Caves Road to 140 metres east of McKanes Falls Road will also be reduced to 80km/h.
There will be no change to the existing 40km/h truck and bus speed limits on Victoria Pass and River Lett Hill west of Hartley.
“The speed limit is being reduced due to the high crash rate, the road alignment and lack of clear zones and sight distance," Mr Toole said.
"The reduced speed limits are expected to improve safety for all road users."Roads and Maritime Service expects the new speed limit signs to be installed from 2 July, weather permitting.