Drivers taking part in the Undie 500 have left Christchurch and police have reacted by warning participants that they will not be able to use diversion if they break the law.
The convoy is reportedly near Ashburton and have been pulled over for a Warrant of Fitness check by police.
The event involves a student pub crawl between Christchurch and Dunedin in cars worth under $500 and has in the past caused headaches for Dunedin police left to control riotous behaviour at their end over the weekend.
Participants traditionally decorate their cars for the occasion. This year one car has been made to look like a panda, while another looks like a case of Double Brown beer.
Passengers have also donned costumes, dressing as everything from woodland animals to Australian cricket players.
Dunedin and Clutha area commander Dave Campbell said there would be a boosted police presence this weekend and anyone arrested would be declined diversion, leaving them with a criminal record.
"We're encouraging those involved to enjoy themselves within the bounds of the law," he told the Otago Daily Times.
Last year the official Undie 500 was cancelled, but a rogue event in its place ended with dozens of students and non-students being arrested following rioting and drunken behaviour.
- NZ HERALD STAFF, NZPA
No diversion option for Undie 500 law breakers - police
Participants in this year's Undie 500 rally pose with their WWF car. Photo / Supplied
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