New traffic lights at the intersection of Kingsway and Woolooware Road, Woolooware, have been switched on.
The decision to install the lights followed community agitation after the September, 2018 accident two blocks away in which Gai Vieira was critically injured.
Mrs Vieira's Mercedes was hit by a police car as she made a right turn from Connels Road into Kingsway.
Following the accident, there were many complaints from motorists of about how difficult and dangerous it could be turning right from streets on the southern side of Kingsway.
The intersection next to Woolooware Oval was a major concern.
Cronulla MP and Attorney-General Mark Speakman announced lights would be installed at that location in December last year, saying, "The government has listened to community concerns".
The lights were installed a week ago and underwent testing before becoming fully operational on Thursday.
Meanwhile, Sutherland Shire Council will carry out formal community consultation on a proposal to ban motorists turning right from Connels Road on to Kingsway.
Transport for NSW south east precinct director Lara Kirchner said the state government installed the new traffic lights at Kingsway and Woolooware Road "after listening to community concerns about the intersection".
"It's great to see work complete and the traffic lights switched on, which will help ease traffic flow for the 20,000 vehicles travelling through the intersection in the morning and afternoon peaks," she said.
"Motorists turning right from Woolooware Road into Kingsway and right from Kingsway into Woolooware Road will particularly benefit, especially in peak periods."
Ms Kirchner said work to install the traffic lights started in September, and followed an analysis of traffic, pedestrian and crash data.
"Woolooware Road heading north will now have two lanes approaching Kingsway with the left lane marked as a dedicated left lane, which is expected to help ease congestion at the traffic lights," she said.
"It's also a busy pedestrian location, with many local families travelling to Woolooware Oval, the railway station or nearby homes and schools.
"To help increase safety for the community, new pedestrian crossings have been installed at the traffic lights to help assist people crossing these busy roads.
"The design was finalised following discussions with the local community and Sutherland Shire Council."