Griffith drivers are being encouraged to be vigilant when using the Yoogali intersection.
Drivers travelling along Irrigation Way are now being asked to give way at the notorious intersection when previously they would have right of way.
It means divers approaching from the Burley Griffin Way or Kurrajong Avenue have right way of way.
Councillor Doug Curran, the chairman of Griffith City Council's traffic committee, said the recent change was creating confusion which increased the risk of car crashes.
"The main worry is the confusion created at the intersection for a short-term period," Cr Curran said.
Cr Curran said the intersection upgrade was needed, but criticised Transport for NSW's roads department for not warning the community of the changed conditions.
"There's almost no communication and no consultation between community and council," he said.
Cr Curran said council staff had approached the Transport for NSW and raised concerns about the placement of the give way signs.
"They were told that this was their project," he said.
"I've heard from half a dozen people, from L platers to the elderly, that they've had trouble with the intersection.
"We expect challenges with a major upgrade, we just wish they had listened to some of the community's input."
Cr Curran said there were no issues when traffic controllers were on site but the trouble began when the road was re-opened in the evenings and at weekends.
A number of drivers have experienced close calls as a result.
Cr Curran said it was disappointing because up until recently Transport for NSW had been "fairly consultative" with council and the community.
It's believed a major reason for the changed traffic conditions is ensuring cars and trucks aren't stopped across the railway line.
Cr Curran encouraged drivers to be aware of the changed conditions.
"The RMS says drive to the conditions, there are some changes in (traffic) priority, be aware there are some changes at the intersection."
Cr Curran hoped the traffic lights would be installed before harvest begins as it would see traffic movements triple on the intersection between grain and grape workers and trucks.
A Transport for NSW spokesman said the project was nearing completion which is expected in mid-November.
The spokesman said Transport for NSW had been in continual contact with Griffith council about the project and the impact on traffic.
"We are continuing to work with them to manage the changed traffic conditions," he said.
"Currently, Transport for NSW has implemented give way signs at the east-west approach as the northern approach is impacted by the rail crossing on Burley Griffin Way.
"The give way signs are an after-hours measure to control traffic, and the site is under the control of traffic controllers during work hours.
"These short-term intersection changes have been put in place to ensure safety for all road users, particularly around the rail line and boom gates, while the intersection upgrade continues."