Wollondilly Council wants to fix Argyle Street's traffic issues but a set of proposed traffic lights are proving to be a sticking point for some councillors.
The Picton Transport Plan 2026 masterplan was debated at this week's council meeting.
Councillor Michael Banasik said more information was needed on the proposal to install traffic lights at the intersection of Menangle and Prince streets.
"Residents have some concerns about the signalisation of this intersection," he said.
"I think we should be doing another workshop on the plan to clarify things there.
"Obviously the big picture is that we want the Picton Bypass but that is a $30-$40 million project and we will need a state funding commitment to build that bypass."
The RMS have told us that our intersections will be failing by 2021.Matthew Deeth, Wollondilly mayor
Councillors Robert Khan and Noel Lowry agreed that a further workshop on the traffic lights was necessary.
However mayor Matthew Deeth said Picton's roads were becoming a safety issue.
"One of the challenges we have is that the RMS have told us that our intersections will be failing by 2021 - that is just two years away," he said.
"How did we get to a point where our traffic network is failing? Safety is paramount and this is becoming a huge safety issue."
Councillor Simon Landow agreed with Cr Deeth.
"This is a clear-cut safety concern," he said.
"Where did you get your engineering degree Cr Banasik? It must have been from the back of a Coco Pops box.
"This (traffic lights) needs to happen and it has needed to happen for a long time."
Other proposed changes to the Picton town centre traffic network include stopping right-turn movements at the intersection of Menangle and Argyle Streets, a Colden Street 'bypass' via Colden and Margaret Streets, moving the existing Argyle and Menangle Streets pedestrian crossing further to the north and upgrading the intersection of Prince and Argyle Streets to include dedicated turn lanes.
Cr Deeth said the proposed changes were necessary to ensure traffic flow in Picton could withstand future population growth.
"We will have thousands of new residents in the region soon," he said. "We need to do some forward planning. We have got to be proactive."
The plan is expected to come back to council next month.