Campaigners lobbying for safety measures on an accident blackspot claim authorities will take no action until there is a death.
On Friday, a family in a car were left “shocked and shaken” when a nearby van overturned coming down the A418 outside Mill Cottages in Wing.
The accident happened at around 3.50pm and no-one was injured.
James Brown, of Mill Cottages, has been campaigning for six years for safety measures to be introduced on the road.
Mr Brown said: “We’ve been campaigning to the local council and even the police, saying how dangerous it is.
“Each time, we’ve got back a message stating the road didn’t fit the criteria.
“It appears there needs to be a fatality.
“Someone has got to die before they do something.”
There have been a number of accidents on the road in recent years.
In 2013, a driver was thrown from a Red Rose bus after being involved in a collision with a Mini.
He later had to be taken to A&E with serious back and shoulder injuries.
Mr Brown added: “At the end of the day, that’s one of our lives that they are taking for granted.
“The idea that someone has got to die is not acceptable.
“We’ve got lorries going past at 40 or 60mph and you can imagine if one of them was in a collision.”
Mill Cottage resident Clare Pye was coming home with her two children when she saw the overturned van.
She said: “Immediately, I thought the worst, but the driver was OK which is brilliant.
“People tend to fly past which means it’s particularly dangerous if you’re parking.”
A Thames Valley Police spokesman said: “We were called at 3.50pm on Friday to a report of a van having overturned on the A418, on the road from Wing to Aylesbury.
“The driver was not injured and officers closed the roundabout near Cottesloe School while the debris from the van was being collected.
“The road was reopened by 5.15pm.”
A spokesman for Bucks County Council pointed out there had been no injuries reported on the road since the collision in July 2013.
He said: “This section of the A418 was treated as part of a safety scheme in late 2010.
“This included central red surfacing under the cross hatching to deter overtaking and highlight the turns into the frontages.
“In the last five years there have been two injury collisions reported by Thames Valley Police outside Mill Cottages, both resulted in slight injuries.
“One collision involved a driver swerving for a deer carcass, in 2011, the other in 2013 involved a vehicle pulling out of the layby in front of the cottages.
“The A418 has recently been resurfaced and the red surfacing reinstated.”