Norfolk Police and Crime Commissioner Lorne Green has announced plans for a new safety campaign after six people died on the county’s roads last week.
The pledge was made as police appealed for witnesses to one of the collisions, which happened on the A149 near Castle Rising last Wednesday, to come forward.
Mr Green said it was too early to draw conclusions about any of the incidents while investigations were continuing.
But he said road death figures had been falling in Norfolk ahead of the latest series of incidents.
He urged motorists to drive “defensively” and be mindful of their surroundings and actions, as well as those of other road users.
The new safety campaign is expected to begin in October and will principally be aimed at younger drivers, by taking a car that was wrecked in a crash into schools.
Mr Green said: “It will allow young drivers a graphic illustration of what can happen.”
Emergency crews were called to the collision, between a blue Peugeot 107 and a blue Vauxhall Astra, on the A149 close to the Castle Rising junction shortly after 5pm on Wednesday.
The driver of the Peugeot, a woman in her mid-70s, was pronounced dead at the scene.
Her passenger, a woman in her late 80s, was taken to the Queen Elizabeth Hospital where she later died.
The driver of the Vauxhall, a man in his late 40s, suffered serious injuries and was also taken to the Queen Elizabeth Hospital.
Anyone who saw what happened, or either of the vehicles involved prior to the crash, should contact PC Steve Bodle, of the Norfolk Police serious collision investigation team on 101.
Meanwhile, police yesterday launched a week-long clampdown on speeding, as part of a Europe-wide campaign. Additional checks will take place across the county until Sunday.
Mr Green said: “The work police and partners do to educate drivers, not just during campaign weeks but all year round, is undoubtedly making people more aware of the dangers of reckless driving.
“But there’s only so much our police can do to keep Norfolk’s roads safe. The rest comes down to social responsibility.”