ACT woman Khayla Reno, 29, her unborn baby and her 10-year-old daughter Eryka, died after a collision with a truck at the Gocup Road and Snowy Mountains Highway intersection in May.

The baby's father, Jamie Millard, told The Daily Advertiser that another family should not have to experience a tragedy because of the "dangerous" intersection.

"People should sign for sure, 100 per cent," he said.

"I own my own construction company and do roads myself and I think the intersection is appalling, really,

"I don't want anyone to go through what I have been through."

Wagga MP Joe McGirr has launched a petition calling for NSW Parliament to note the tragic multiple-fatality collision and call for upgrades.

Dr McGirr said this week that the petition had already gained more than 850 signatures, which was above the 500 minimum needed to be presented to Parliament.

"I really want to see if we can get it as close to 10,000 as possible, and that might take some time, but it would lead to a debate in Parliament," he said.

The petition asks Parliament to "note and acknowledge the tragic collision outside of Tumut on the Gocup Road and Snowy Mountains Highway intersection" and to "call on the government to urgently review and upgrade this intersection with the additional safety measures necessary to prevent future tragedies".

Mr Millard said he "100 per cent" wanted to see the petition get to 10,000 signatures.

NSW Regional Transport and Roads Minister Paul Toole said this week that he looked forward to discussions on the intersection's future.

"At my request, Transport for NSW and the Centre for Road Safety are undertaking a priority review of the intersection with a view to identifying permanent solutions to improve road safety at the intersection," he said.

New stop signs and digital slow down signs have been installed at the intersection in the past few months but residents have criticised that measure as "inadequate".