Four drivers in Nelson have lost their license after being caught speeding.
Police said the drivers were caught driving at more than 140km/h - 40km/h above the posted speed limit.
Anyone caught driving 40km/h above the speed limit has their license suspended instantly and will be summoned to appear in court, police said.
The vehicles were among seven police caught at high speed on Whataku Dr within an hour on Sunday evening.
Insp Hamish Chapman, of Tasman, said the driving behaviour has police concerned.
"In one recent operation, seven motorists were found to be driving with excess breath alcohol, while many more have been caught using cell phones in operations targeting distracted driving.
"We're urging motorists to think about their lives, their careers, their travel opportunities and also other people.
"The impact of being caught drink-driving or travelling at dangerous speeds can have effects on you that you can’t anticipate.
"Ask yourself what you'd say to a person's family if your poor driving behaviour resulted in someone getting killed and what you would tell your own family.
"There's no excuse that can justify it."