Motorists will be unable to turn right from Palmer Street onto Cobra Street when the development at the former RAAF base site progresses.
Andorra Developments purchased the site in 2011.
At the end of 2018 approval was granted for a plan that includes more than 400 houses. There will also be a tourism zone - which could be used for food and beverage buildings like a cafe or pub - as well as accommodation.
As part of the development, Dubbo Regional Council has approved changes to the road network surrounding the site. It includes changes to the Palmer Street intersection with the highway.
In a report on the traffic changes, council manager infrastructure strategy and design Stephen Howlett said "the existing right turn facility from Palmer Street onto Cobra Street to travel eastbound is to be eliminated".
The existing right turn facility from Palmer Street onto Cobra Street to travel eastbound is to be eliminated.Stephen Howlett
"The right hand turn lane shall be removed, with one left hand turn lane to remain," he said.
Mr Howlett said cars would still be able to turn left onto the highway.
"All vehicles that wish to turn right from Palmer Street and travel eastbound on Cobra Street will be required to access the new signalised intersection on Cobra Street, via the proposed roundabout at the intersection of Palmer Street and Goode Street, and then the internal road network through the RAAF Base development," he said.
A roundabout will be constructed at the Goode and Palmer street intersection.
The roundabout is expected to have only three exits. Council is in the process of liaising with some of the residents of Goode Street before the plans are finalised.
"The final design proposes the closure of a leg of the Goode Street/Palmer Street roundabout, preventing traffic exiting the development from using Goode Street as a 'rat run' to avoid traffic signals or the Mitchell Highway," Mr Howlett said.
There will be two main points of access into the former RAAF base. The first will be accessed through traffic lights - if approved by Roads and Maritime Services - at the intersection on Cobra Street, and the other will be the roundabout.
Before it was purchased by Andorra Developments in 2011, the former RAAF base had been empty for 15 years.