On Friday the Jerrara Rd resident added another accident to his records, meticulously kept since 2001.

In 15 years he has recorded three fatalities on the road, linking South Marulan to Bungonia.

Fortunately, Friday's single vehicle accident did not add to that tally. Nevertheless, Mr Goddard says the stretch is "a fatal waiting to happen."

At 3.15pm a 30-year-old Goulburn woman driving an early model Toyota Camry south, lost control of the vehicle, some 6km from the Hume Highway junction, police said.

The driver's side crashed into a guardrail on the s-bend. Her daughters, aged nine and 10, were sitting in the back seat.

Police Rescue freed the woman and one of the girls, who were trapped for 40 minutes. The Snowy Hydro SouthCare helicopter flew the woman to Canberra Hospital with possible spinal injuries.

Her daughter sustained a broken leg and was taken to the same hospital by road ambulance, Inspector Rob Post confirmed. The injuries were deemed non life-threatening.

The other girl was uninjured.

Police have not yet established a cause but Inspector Post said the road was wet at the time, following heavy rainfall.

Mr Goddard said a wooden post knocked out from the guardrail still hadn't been repaired from the last accident at the same spot, despite council assurances.

"Now they'll only have to do it once," he quipped.

But it's no light-hearted matter in his book. Thanks to his representations to Goulburn MP Pru Goward in 2014 and her subsequent letter to Roads Minister Duncan Gay, the road's speed limit was dropped from100km/h to 80km/h.

But still, weekenders and locals are flouting this restriction, Mr Goddard says. It's all the more perilous on a thoroughfare with numerous twists and turns, narrow bridges and culverts.

"They're out in the country and think they can do anything," he said.

"I don't actually think there's anything wrong with the road. It's the drivers."

As the Goulburn Post interviewed him later at the scene, cars came around the corner at speed, crossing double yellow lines.

The retired panel beater has driven his fair share of race cars (around circuits) in his time and says he knows what speed can do.

He's a big believer that a little local knowledge can go a long way.

His notebook records the following Jerrara Rd accidents:

* A fatal motorbike accident 8.3km from the Hume Highway junction in 2001.

* A woman killed when her car crashed into a tree in 2008, 7.5km from the Hume Highway.

* In 2012 a young boy, sitting in the rear of a vehicle, was killed after his family's car ran off the road, 10km from the highway.

Mr Goddard has also noted seven other accidents, including a tipper and dog rollover in 2008, over the 15 years at various points along the road.

"I'd just like police to be out here a bit more with the radar," he said.

"It's important to me because someone will be killed."

In response to his concerns, Hume Local Area Commander, Superintendent Zoran Dzevlan wrote to Mr Goddard in December, 2014. He stated that police regularly patrolled Jerrara Rd and he had personally done so himself.

On Saturday, Inspector Post also described it as one of the more heavily policed areas, given its proximity to the highway and the Marulan Heavy Vehicle Checking Station.

"It is obviously an offshoot to the highway but it's also used as a route to the coast," he said.

Bungonia and district residents have long campaigned for the road's upgrade and reduced speed limit, given the number of trucks using the link.

They have upped the ante in recent years with the prospect of more heavy vehicles from Ardmore Park Quarry on Oallen Ford Rd.

The road's improvement, as part of the haulage route, is tied to the quarry's consent conditions.