Police are urging caution on southern roads over the next few days as motorists travel back home from the Burt Munro Challenge in Invercargill.
A Southern district police spokesman said there would be thousands of extra vehicles on the roads and said it was crucial for drivers to "keep their cool at all times".
"As people travel back home from the Burt Munro Challenge, we remind motorists that our highways are not race tracks and there is no prize for getting home first.
"Thousands of people are leaving the Invercargill region in the coming days, prompting our reminder to drive safely so you reach your destinations safely."
He urged drivers to plan their journeys ahead and allow plenty of travel time in case of delays.
"With a significant increase in traffic heading out of the region, it is crucial to keep your cool at all times.
"Please drive to the conditions, obey all speed limits and restrictions, don’t drive impaired and keep your phone away.
"If you are feeling fatigued, pull over or have somebody else drive."
He urged those riding motorcycles to wear all the appropriate safety gear and check their bike was road safe before setting off.
As of last night, he said police did not have any comprehensive numbers in terms of the number of infringement notices handed out to drivers, or those who had been summonsed to appear in court.
"We hope everyone enjoyed the events in our region, and if you’re on the road, expect to see us out and about, making sure everyone’s safe."