Up to 200 reports were made to police last night over street racing and anti-social road user behaviour in Waikato.
A police spokesperson said police attended several areas, including Airport Rd, which has become a popular place for street racers.
Other road users have reported scary incidents, one in which up to 300 cars at a time suddenly stopped in the middle of the road and began to perform burn-outs and skids.
In other frightening instances, concerned drivers in the area have also reported other cars driving towards them on median strips and crossing the centre line.
The police spokesperson said police prioritise attendance at calls for service by the risk to life and/or property.