Road safety campaigner uses rubber duck ploy to help fix New Zealand's 'worsening' pothole problem

It's pothole season all across New Zealand, and they're more punishing than usual because of the rain.

No region is spared the indignity of a sudden slap across the suspension - but one man is on a mission to get potholes fixed.

Road safety campaigner Geoff Upson started by spray painting penises on potholes in a bid to get them fixed, but now he's turned to putting rubber ducks in them.

He said New Zealand's pothole problem is getting really bad.

"Every year it seems to be getting worse and worse," he told The Project on Tuesday.

From where he was standing while speaking to The Project, he pointed out two large potholes behind him. But he said it's relentless and there are more around every corner.

"People are contacting me all the time with damage to their vehicles, or even worse, they've been involved in a fatal or serious injury crash," Upson said.

"Just last week, I stopped and looked at some potholes and there were three people pulled over, all with smashed wheels. The potholes were so bad that they'd smashed their wheels, not just popped their tyres but smashed the wheels apart, and they were just dumbfounded."

But some road fixers are constantly opting for temporary repairs, rather than permanent ones.

"It's ongoing. What we need to have happen is a mill and fill, and that's where they bring in a big machine and it's like a big rotary hoe," Upson said.

"It just digs up the road, they take away all of that damaged road, and then they come in and they lay a nice new aggregate, and then a nice layer of either chip seal or asphalt on top of that."

While phallic spray painting and rubber ducks have been successful for Upson in getting potholes repaired, he said there is a more effective way to make sure they get fixed.

"We need to be making phone calls. Every time you see a pothole, you need to call it in," he said.

"We need to make sure they're aware of the pothole. We also need to tell them that it's a serious issue. The more people who call in, the more likely they'll be to send someone to actually fix the road."

Watch the video above.