While holidaying at MacMasters Beach on January 6, 2014, her then-four-year-old son Tom, was killed by a car after straying from his mother's side.

"Ironically he was not a natural risk-taker, he always held my hand or his brother's pram when we were out and about," Ms McLaughlin said.

"Despairingly, I thought to myself so many times in 2014, how could this dreadful situation have happened? We were so safety conscious and hyper-vigilant."

From the broken pieces of a shattered family formed a nationwide appeal to save others from suffering a similar tragedy.

Taking its name from Tom's favourite colour, and object of his most common childhood artwork, the Little Blue Dinosaur Foundation began its life through the grief of his death.

Beginning with the town where Tom sadly lost his life, in the past five years, Ms McLaughlin has installed safety signs across 61 council areas in four different states.

Aided by funding from NSW Transport, the latest messages have been unveiled in Old Junee, at the playground near Goldfields Way.

"Our message is simple, 'hold my hand'. It's as important as placing a seatbelt on them in the car, maybe more so because when you're walking around you have nothing around you to protect you from being hit.

"As a bereaved mother, I say with deep sincerity that losing a child to devastating road tragedy trauma accident is a very heavy load to bear," Ms McLaughlin said.

The most confronting aspect of Ms McLaughlin's visit to the Junee Shire came from the stories shared by those who had gathered.

Stories of near-misses and unspeakable pain abounding, made apparent that Ms McLaughlin's experience is altogether far too common.

Old Junee resident and designer of the playground wherein the signs have been installed, Anna Lashbrook tearfully recounted how her own life was almost touched by the same tragedy.

"It certainly hits home for me, I've had an incident when my daughter ran out onto the road while using this playground, it's terrifying. I can't imagine what [Michelle] has lived through."

Meanwhile, Junee Shire Council deputy mayor Matt Austin shared a piece of personal history while growing up in suburban Melbourne.

"When I was about nine years old, I was carrying bread rolls across the road, misjudged the distance of a car, and landed on its bonnet.

"I went right over the top, hit the ground and saw the back wheel go straight past my face. I was lucky, but it serves to show that life can change in a matter of seconds," he said.