Drivers travelling over the speed limit would face enforcement action.
Gary Bogaart, general manager of Fram Autolite Dragway, said the alcohol-free "Night Speeds" event at Meremere was attended by motoring enthusiasts - 90 per cent of whom were aged between 16 and 28 - who wanted a legal, cost-effective and safe place to race their cars.
He said the night drags had been running for more than 15 years and were set up in conjunction with police to get boy racers off the roads.
"The majority are good kids but there's a minority who will go out and wreck it and get caught doing stupid things on the streets."
Meanwhile, motorists travelling to Taupo for the PowerCruise event can expect extra traffic in and around the area and are being encouraged to allow plenty of time for their trips.
Sergeant Greg Weston, of Taupo police, said there would be police checkpoints and motorists would be breath-tested.
Motorists with modified vehicles would also be targeted.