If you're out on the busy roads this Easter weekend, there's a fair chance you'll spot road rage or poor driver behaviour.
And while police are urging extra patience, one angry Auckland man has developed a new APP to help motorists stay calm behind the wheel.
Ace Lio is not ashamed to admit, he has a problem.
People cutting him off, tailgating, dangerously slow drivers, you name it; it makes his blood boil.
"I want to be a role model to my family, I try to do the sensible thing. I try my hardest and having my son there he keeps me on the leash," Mr Lio says.
But his son Malachai Fenwick can't always be with him so Mr Lio has designed the Whistlebox App pre-loaded with his son's voice or calming music.
When his blood pressure goes up, or the heart races, a fitbit on his wrist sends a message to the App on his phone.
At no stage does he have to take his eyes off the road.
"The fitbit picks up the signal, sees that I'm angry and plays the audio of my son saying 'Dad leave it alone it's not worth the trouble.'"
Mr Lio says his son doesn't even need to record many words. It's the calmness of his voice, and the tone that works magic on him when he's "having an episode".
It's taken half a dozen prototypes but now the Auckland designer's at the patent stage.
With 101 people killed on the roads already this year- the latest this Easter- the NZ Transport Agency (NZTA) is welcoming innovations like this.
NZTA spokesperson Andy Knackstedt says, "We're really keen to hear from people who have thought of ways to use technology to make themselves safer on the road and to help reduce the number of crashes and serious injuries, this is a national tragedy and we can't solve it on our own and we really want to hear from people with good ideas."
And that's what's driving Mr Lio to get everyone home safe.
Research has found being in a vehicle can give you a false sense of protection, a feeling that you can say and do what you want and the car acts as your armour.
Police are reminding those prone to road rage is that you're still in charge of a lethal weapon.