Two P-plate drivers caught exceeding the speed limit by more than 45km/h have had their licences suspended on the weekend.

A 19-year-old Macgregor man, driving a Hyundai Tiburon on William Hovell Drive in Hawker, was caught doing 145km/h in a 90km/h signposted zone.

In a separate incident, an hour later, police detected an 18-year-old Page man driving an Audi S3 on Coulter Drive in Cook doing 167km/h in an 80km/h signposted zone.

The two P-Platers had their licences immediately suspended for a period of 180 days, and were each issued with a traffic infringement notice totaling $1841, and six demerit points.

Additionally, the 19-year-old man was also fined for not displaying his P-Plates, and not complying with vehicle standards, bringing his total infringement to $2289.