Minimal changes have been made to proposed extensive road works on Princes Highway between Gymea and Kirrawee following community consultation.
However, the hours on a section of new and expanded clearways between Kirrawee and Menai will be extended, and the changes are expected to start in October.
Two contentious right-turn ban proposals will go ahead.
There will be a permanent removal of right turn movements from Princes Highway into Oak Road, in addition to the present peak period ban, and a right turn ban from President Avenue into Princes Highway northbound from 3pm to 7pm on weekdays.
State MPs Eleni Petinos (Miranda) and Lee Evans (Heathcote) said submissions were received from more than 300 people and Sutherland Shire Council.
Community consultation reports could be viewed at: rms.nsw.gov.au/projects/easing-sydneys-congestion/gateway-tosouth/index.html
The MPs said work on the intersection improvements was expected to start next year, with changes to the clearways expected to start next month.
The clearways cover the road corridor from Acacia Road, Kirrawee to New Illawarra Road, Menai
RMS proposed the clearways operate in both directions on weekdays from 6am to 10am and 3pm to 7pm, and on weekends and public holidays from 9am to 6pm.
Following feedback, RMS decided to extend the hours of operation on Linden Street, River Road and Bangor Bypass from the intersection of The Grand Parade, Sutherland to New Illawarra Road, Menai.
The revised hours will be weekdays from 6am to 7pm, and weekends and public holidays from 9am to 6pm.
Existing parking restrictions will continue to operate outside of these times.